Hey Divas and Divos!
We all like and wish for nice expensive things, right? But, on the other hand, if we budget conscious shoppers could get something nice and inexpensive that is the same or very similar to something nice and expensive we'd do it.  If you listened to our December 19, 2010 
blogtalk radio show, you heard us discussing a "dupe" for Nars's Orgasm Blush. A makeup dupe is a product that is the same or very similar to another product.  Often times the dupe is a less expensive version of the other product.  On that particular show, we discussed Milani's Luminous Blush as a dupe for Orgasm.  We've found some extensive dupe lists on the web which we'll share with you.  
The best dupe list out there would probably have to be on 
temptalia.com.  This site has a searchable dupe list that matches products to a percentage of accuracy.  Definitely head to their site and check it out
In addition, 
MakeupTalk.com posts lists the following dupe lists:
MAC eyeshadows = Milani eyeshadows
MAC pigments = NYX Loose pigments 
Stila eyeshadows = Prestige eyeshadows
Here's some more specific colors that I have used before:
MAC Satin Taupe eyeshadow = Rimmel All Over Pencil in Strength
MAC Sumptuous Olive eyeshadow = Milani Antiqued Gold eyeshadow
MAC Shroom eyeshadow = Jordana in Beige eyeshadow
And here are some more knockoffs that I know of:
*Blush 
NARS Orgasm blush = Milani Luminous, Cover Girl Rose Silk Cheeker, Mark Afterglo, Loreal's LE Front Page Peach
NARS Sin blush = Milani Temptation 
Nars Deep Throat = Rimmel Apricot Blush
NARS Antibes Multiple = Wet 'n Wild #721 Scandalous
NARS Copacabana Multiple = Wet 'n Wild #724 Flirt
NARS Maldives Multiple = Wet 'n Wild Just Peachy
NARS Portofino Multiple = Wet 'n Wild #722 Coy
NARS South Beach Multiple = Wet 'n Wild Brazen Babe
*Eyeshadows 
MAC Bamboo = Wild and Crazy Wild Guava
MAC Brill = Wild & Crazy Bahama Water
MAC Dark Soul pigment = Jane Clubbing
MAC Gorgeous Gold = Prestige Glitz C-157
MAC Juxt = Jane Rain Forest
MAC Lucky Green = Wet n' Wild Marquis
MAC Naked Lunch = Wet n' Wild Fine Wink
MAC Paradisco = Flirt! Feeling Hot
MAC Trax = Flirt! Glamourazzi
MAC Vellium = Wild and Crazy Lily Song
MAC Amber Lights = Milani Sun Goddess
MAC Black Tied = Jane Clubbing = Milani Storm 
MAC Coppering = Milani Flare
MAC Dementhe, Steamy, Humid = Milani Clover
MAC Electric Eel = Milani Atlantis
MAC Guacamole = Milani Limbo Lime
MAC Jest = Milani Peachy Peach
MAC Juxt = Milani Garden Mist (juxt is lighter and yellower)
MAC Little Madame = Milani Illusion
MAC Mulch, Sable = Milani Java Bean
MAC Parfait Amour = Milani Enchantment
MAC Perverted Pearl = Milani Silver Bullet
MAC Pink Freeze = Milani Taffy
MAC Shale = Milani Icy Plum
MAC Silver Pigment = Milani Mercury
MAC Sketch = Milani Marooned
MAC Vanilla = Milani Snow Frost
MAC Vellum = Milani Moonlight
MAC Woodwinked = Milani Golden Bronze
Shu Uemura ME 945 = Caboodles Smooth
Shu Uemura P Brown 76 = Flirt Oh Please!
Stila Barefoot Contessa = Prestige Spark
Stila GoLightly = Jane Magical Mushroom eye shadow (discontinued), Milani Golden Bronze
Stila Grace = Ulta Plum Smoke
Stila Jade = Sally Girl China Doll (discontinued)
Stila Kitten = Wet n Wild Fine Wink, CoverGirl Champagne Eye Enhansers shadow, Sally Girl Silver Lining
Stila Sun = Prestige Champagne
Stila Twig = Milani Spice
Urban Decay Acid Rain = Prestige Wasabi
Urban Decay Asphyxia= Milani Enchantment
Urban Decay Midnight Cowboy = Milani Sheer Sand
Urban Decay Mildew = Prestige Iguana
Urban Decay X = Ulta Sunlight 
*Lipsticks/Lipglosses 
Chanel Blizzard Glossimer = Wet n' Wild Bronzeberry Gloss
Chanel Giggle Glossimer = Neutragena Chic gloss
Chanel Twinkle Glossimer = Prestige Alloy Vinylwear
Chanel Nude Liner = Max Factor Liner in Nude, Wet n' Wild #666
Clinique Black Honey Almost Lipstick = Maybelline Drippin Honey Wet Shine 
Lipstick
Lancome Simmer Juicy Tube= L’Oreal Strawberry Smoothie ColourJuice, L’Oreal Butterscotch Drop ColourJuice
MAC Dainty Cake Lipstick = NYC Firefly #306b
MAC High Tea Lipstick = Rimmel Airy Fairy, Milani Sheer Lipstick in Amaterro
MAC Lovechild Lipglass = Rimmel Snog Lipgloss
MAC Love Nectar Lusterglass= Milani Coral Shimmer Lipgloss
MAC Lust Lipglass= L'Oreal ColuorJuice in Passionfruit Squeeze
MAC Oh Baby Lipglass = Milani Serendipity Gloss
MAC Prrr Lipglass = L'Oreal ColourJuice in Mai Tai 
MAC Plum Liner = Revlon Colorstay Plum liner
MAC Sequin Lipstick = Almay Sequin One Coat Lipstick
MAC Spice Liner = Wet n’ Wild #666 or #712 Liner
NARS Orgasm Lipgloss = NYC Sungold Lipgloss, Mary Kate and Ashley Truly Lipgloss
NARS Pillow Talk Lipgloss = Rimmel Vinyl Lip Star in Be A Star
NARS Turkish Delight Lipgloss = Neutrogena MoistureShine in Groove
Scott Barnes Flossy Glossy in Meow = Neutrogena Groove Moistureshine
Stila Apricot Lipglaze =Prestige Fuzzy Navel Jet Stream Gloss
Stila Jane Lipstick = Rimmel Birthday Suit Lipstick 
*Brushes
MAC #187 Stippling Brush = Flirt! Skunk Brush 
LIPSTICK LOOKALIKES
Aveda
Original: Aveda Matte Huckleberry Lipstick 
CopyCat: Bonne Bell Autumn Rose 
Original: Aveda lipstick in Sheer Ambrosia 
CopyCat: Clinique lipstick in Black Violet 
Original: Aveda lipstick in Tupelo 
CopyCat: Elke lipstick in Java 
LIPSTICK LOOKALIKES
Avon 
Original: 
Avon Triple Benefit Lipstick in Rosetone 
CopyCat: Estee Lauder All-Day Lipstick in Rose 
Sapphire 
Bobbi Brown
Original: Bobbi Brown Beige Gold Lipstick 
CopyCat: L'Oreal Hip Honey 
Original: Bobbi Brown Blackberry 
CopyCat: Revlon SuperLustrous Blackberry 
Original: Bobbi Brown Garnet Shimmer 
CopyCat: MAC O 
Original: Bobbi Brown Pinkberry Stain 
CopyCat: Prestige Berry Stain 
Original: Bobbi Brown Nude 
CopyCat: Revlon Pro Neutrality 
Cream 
Comments: The GB looks exactly like the BB but in a gloss. Results may vary. 
Original: Bobbi Brown Raisin 
CopyCat: L'Oreal Colour Supreme lipstick in Real Raisin 
Comments: If you're not put off by the smell of L'Oreal lipsticks, (yuck!) you can snag a classy color for cheap. 
Original: Bobbi Brown Redwood 
CopyCat: Revlon Pro Burnished Cream 
Bourjois
Original: Bourjois Beige Noir 
CopyCat: Chanel Beige De Chanel 
Chanel
Original: Chanel Beige De Chanel 
CopyCat: Bourjois Beige Noir 
Original: Chanel Berries 
CopyCat: Jane Best of Berries 
Original: Chanel Black Red 
CopyCat: DCA #115 
Original: Chanel Gold 
CopyCat: Cosmetic Factory's 24 Karat 
Original: Chanel Metallic Vamp Lipstick 
CopyCat: L'Oreal Mica 
Cosmetic Factory Metallique 
Original: Chanel Midnight 
CopyCat: Cosmetic Factory 12 a.m. 
Original: Chanel Rouge Noir Lipstick 
CopyCat: Wet'N'Wild Blackest Red 
Original: Chanel Vamp 
CopyCat: Wet'N'Wild Blackest Red 
Christian Dior
Original: Christian Dior's Jazzy Brown 
CopyCat: Lancome Raisinette or Matte Raisin 
Original: Christian Dior's Rose Souffle lipstick 
CopyCat: Loreal's Tendre Mauve (color riche) 
Comments: Loreal's lipstick is THE SAME AS Dior's.It's the same--color, texture, scent/taste. 
Clinique
Original: Clinique Berry Buff 
CopyCat: Cover Girl Coco Blush 
Original: 
Clinique Lipstick in Buff 
CopyCat: Bonne Bell lip Gear Citrus City 
L'oreal Tawny 
Original: Clinique Black Honey Almost Lipstick 
CopyCat: Bonne Belle Grapevine Whine lip gloss 
Bonne Bell Grapevine Whine Lip-Lix 
Bonne Bell Cin-a-Money 
Prestige Sheer Grape 
Aveda lipstick in Sheer Ambrosia 
Original: Clinique Double Fudge Lipstick 
CopyCat: Lord & Berry Sheer Mocha 
Original: Clinique Heather Plum 
CopyCat: Almay Serene 
Original: Clinique Nude Ice 
CopyCat: Jane Megabites in Pineapple Delight 
Original: Clinique Sweet Honey 
CopyCat: Jane lipstick in Rosy Outlook 
Original: Clinique Tenderheart 
CopyCat: Natural Glow Wood Hyaicinth 
Elizabeth Arden Breathless 
Cover Girl
Original: Cover girl -spice it up 
CopyCat: Jane flipstick #3 Solar flare 
Elke 
Original: Elke Tribal 
CopyCat: Stila Ina 
Elizabeth Arden
Original: Elizabeth Arden Breathless 
CopyCat: Clinique Tenderheart 
Estee Lauder
Original: Estee Lauder Baby Shimmer 
CopyCat: DCA #113 
Original: Estee Lauder Bare Buff 
CopyCat: Maybelline Nude Lipstick 
Original: Estee Lauder Double Matte Lipstick 
CopyCat: Cover Girl's Self-Renewing Lipstick in Toasted Almond 
Comments: The Estee Lauder lipstick is $15.00, opposed to the CG lipstick with is about $4.00. 
Original: Estee Lauder Inocence 
CopyCat: The Cosmetic Factory's Naive 
Original: Estee Lauder All-Day Lipstick in Rose Sapphire 
CopyCat: Avon Beyond Color Triple Benefit Lipstick in Rosetone 
Original: Estee Lauder Sheer blackberry (Lipblush) 
CopyCat: Origins Bite Your Lips in Raspberry 
Original: Estee Lauder Sheer Bronze(Lipblush) 
CopyCat: Origins Bite Your Lips in Brownberry 
(a tiny, tiny difference 
Original: Estee Lauder Sheer Ruby (Lipblush) 
CopyCat: Garden Botanika Sheer Lipcrayon in Sheer Garnet (discontinued) 
Origins Bite Your Lips in Strawberry 
Garden Botanika
Original: Garden botanika Apple Blossom 
CopyCat: Prestige beigy pink 
Original: Garden Botanika Saffron 
CopyCat: Nat Robbins Rosewood 
Original: Garden Botanika Sheer Sheer Garnet Lip Crayon (DISCONTINED) 
CopyCat: Estee Lauder Lipblush in Sheer Ruby 
Original: Garden Botanika Sassafras Lip Crayon 
CopyCat: MAC Lame 
Original: Garden Botanika Walnut lip pencil 
CopyCat: Origins Clovebud Sheer Stick 
Guerlain
Original: Guerlain Jacinthe 
CopyCat: Stila Carver 
Hard Candy
Original: Hard Candy Pussy Cat Lipstick 
CopyCat: Maybelline Pink Perle 
Jane
Original: Jane's Night Shift 
CopyCat: Revlon Super Lustrous Bold Berry 
Lancome
Original: Lancome Exotique 
CopyCat: L'oreal Brown Sugar 
Original: Lancome Lilas Metallique Lipstick 
CopyCat: Wet'N'Wild 548A 
Original: Lancome Matte Raisin 
CopyCat: Christian Dior Jazzy Brown 
Original: Lancome platinum 
CopyCat: jane's "go platinum 
Original: Lancome Raisinette 
CopyCat: Tropez's Buttered rum 
Christian Dior Jazzy Brown 
Original: Lancome Violine 
CopyCat: Lord & Berry's Intense Plum 
Ethnique lipstick in #528 
Victoria's Secret Black Plum 
Revlon Violet Extreme 
Comments: Ethnique cosmetics are found at Dollar Stores. The Ethnique is a bit drier and has a touch more red in it than the Violine. Unless you compare the two side by side, it's impossible to tell the difference. 
Laura Mercier
Original: Laura Mercier Very Bitten 
CopyCat: Jane Flipstick in Jammin' 
Lorac
Original: LORAC Ashley 
CopyCat: Bath & Body Works 'Canyon' 
MAC
Original: MAC Bubbles 
CopyCat: Wet'N'Wild #516A 
Original: MAC Carnal 
CopyCat: Cargo Congo 
L'OREAL Wine and Dine 
Original: MAC Cherish 
CopyCat: M Professionals Nameless 
Original: MAC Cyber 
CopyCat: Manic Panic's Black Witch 
Original: MAC Del Rio 
CopyCat: Cosmetic Factory Brazil 
Necessites-LeeAnn 
Original: MAC Delish 
CopyCat: Wet'N'Wild Ice Cream 
Original: MAC Desire 
CopyCat: Professional Makeup Company (M) Venom 
Original: MAC Diva 
CopyCat: Jane's "Really Raisin 
Comments: The Jane version is creamier & you can't beat the price. ( $2.49) 
Original: MAC Film Noir 
CopyCat: L'Oreal Colour Endure Hot Fudge 
Garden Botanika's CatTail 
Original: MAC Flavour 
CopyCat: Maybelline Nude Pink 
Comments: Both are nude pink beige shades. Very similar. 
Original: MAC Florien 
CopyCat: Elke Classic Mauve 
Original: MAC Freeze 
CopyCat: Cosmetic Factory Chilly 
Original: MAC Frenzy 
CopyCat: Revlon Bamboo Bronze 
Original: MAC Frou 
CopyCat: Bonne Bell Vanilla Volts 
Original: MAC Grid Lipstick 
CopyCat: Bonne Bell LipGear in Traffic Jam 
Original: MAC Haku 
CopyCat: Wet n' Wild's lipstick #546-A 
Comments: . A $1.50 compared to $14.50 is a real find. 
Original: MAC Haze 
CopyCat: M Professionals Wild Thing 
Original: MAC Hyper 
CopyCat: Revlon Granite 
Original: MAC Lame 
CopyCat: Prestige's Lipstick in Sorbet 
Garden Botanika Lipcrayon in Sassafras 
Original: MAC Lust 
CopyCat: Maybelline Great Wear Silver Lilac 
Revlon Virtual Violet 
Original: MAC Media 
CopyCat: M Professionals Indulgendence 
Original: MAC Modum 
CopyCat: Almay Malt 
Original: MAC O 
CopyCat: Bobbi Brown Garnet Shimmer 
Original: MAC Odyssey 
CopyCat: Bonne Bell Lip Gear in Berry Bash 
Original: MAC Paramount 
CopyCat: Necessities-MacDaddy 
Garden Botanika's Mahogany 
Original: MAC Pervette 
CopyCat: Jane HipLips Pink Slip 
Original: MAC Prism 
CopyCat: Garden Botanika Rose Sage 
Original: MAC Rubine 
CopyCat: Cosmetic factory- Ruby Red 
Original: MAC Spirit 
CopyCat: Cosmetic Factory Angel 
Original: MAC Touch 
CopyCat: Jane Browned Down Red 
TBS Vanillia stick 
Original: MAC Twig 
CopyCat: Avon Twig 
Prestige VIP 
Original: MACs Viva Glam II 
CopyCat: Jane flipstick-Roseland 
Maybelline Lipstick Great Wear Flesh 
Original: MAC Wuss 
CopyCat: Avon Spice 
Wet 'n Wild--#547A 
Original: MAC XS 
CopyCat: Cosmetic Factory Extra 
Wet 'n Wild--#506A 
Manic Panic
Original: Manic Panic 'Tramp' 
CopyCat: Lip Savvy 'Black Orchid' 
Max Factor
Original: Max Factor Lipsilk #10 
CopyCat: Max Factor lasting color in 'UV fusion' 
OPI
Original: OPI How To Jamaica Million Lipstick 
CopyCat: Wet'N'Wild Arctic 
Origins
Original: Origins Bite Your Lips in Brownberry 
CopyCat: Estee Lauder Lipblush in Sheer Bronze 
Original: Origins Clovebud Sheer Stick 
CopyCat: Garden Botanika Walnut lip pencil 
Prescriptives Chocolate Kiss (discontinued) 
Original: Origins Shimmer Stick in Ginger Ale 
CopyCat: Lord & Berry Lipstique in Glaze 
Original: Origins Malt Stick 
CopyCat: Maybelline Lip Express in Coffee Run 
Original: Origins Bite Your Lips in Raspberry 
CopyCat: Estee Lauder Lipblush in Sheer blackberry 
Original: Origins Bite Your Lips in Strawberry 
CopyCat: Estee Lauder Lipblush in Sheer Ruby 
Prescriptives
Original: Prescriptives Blackberry Suede 
CopyCat: Revlon's Blackberry 
Original: Prescriptives Chocolate Kiss (Discontinued) 
CopyCat: Origins Clovebud sheer stick 
Original: Prescriptives Grape Stain Lipstick 
CopyCat: Prestige Sheer Grape 
Original: Prescriptives Mystery Lipstick 
CopyCat: Almay Anti-Chap lipcolor in Softly 
Revlon
Original: Revlon Glossing 
CopyCat: Wet 'n' Wild Lipstick 541 Nouvelle 
Original: Revlon Super Lustrous Bold Berry 
CopyCat: Jane's Night Shift 
Smashbox
Original: Smashbox Smashing Nude 
CopyCat: Elke Oasis 
Stila
Original: Stila Andi Lipstick 
CopyCat: MAC Hyper 
Revlon Granite 
Original: Stila Carver 
CopyCat: Guerlain Jacinthe 
Original: Stila Helen 
CopyCat: Prestige Nuts lipstick 
Original: Stila Ina 
CopyCat: Elke Tribal 
Original: Stila Luce Lipstick 
CopyCat: Cover Girl Raisin Glaze 
Revlon Deep Nude 
Jane's Browned Down Red 
NatRobbins Brandywine 
Original: Stila Piaf Lipstick 
CopyCat: Clinique Black Lily 
Original: Stila Robin 
CopyCat: Naturistics mechanical lipliner in nude 
Three Custom Color Specialists
Original: Three Custom Color Specialists Cool Salmon 
CopyCat: Max Factor's Silksticks #50 
Original: Three Custom Color Specialists Cool Brown 
CopyCat: Nat Robbins "Coffee" 
Original: Three Custom Color Specialists Cool Brown 
CopyCat: Max Factor's Sepia 
Urban Decay
Original: Urban Decay Gash 
CopyCat: Revlon Street Wear All Over Pencil in Blood 
**Disclaimer - We did not create any of these lists. They are the intellectual property of their respective sites.  We simply found them and posted them here for your viewing pleasure.**
Have fun doing your dupe!!!