1 of 30 Mike Marsland/WireImage.com
Marion Cotillard knocks it out of the park in this vintage-y glam Christian Dior couture dress. Using that intense orange-red as an accent color for both her lip and shoes is particularly au courant.
2 of 30 Ian Gavan/Getty Images
The shapeless drape and dried-flower collar of Anne Hathaway's gown remind us of a Mother Nature costume.
3 of 30 Larry Busacca/Getty Images
We don't require couples to dress in entirely matching outfits, but both the color and style of Alexandra Edenborough's and Gary Oldman's garb appear to be entirely out of sync with one another. Is this mirrored by their body language?
4 of 30 Larry Busacca/Getty Images
We're tempted to chalk this one up to teen fashion overexuberance and give her a pass, but Hailee Steinfeld may be regretting this polyester-looking dress and awkward wooden platforms when she sees the photos.
5 of 30 Larry Busacca/Getty Images
We're not sure which frightens us more: Michelle Trachtenberg's bride-of-dracula makeup or the peach satin pumps.
6 of 30 Mark Davis/Getty Images
Anna Gunn works a blonde bombshell look in this sequined pencil skirt and retro pointy pumps.
7 of 30 Stephen Lovekin/Getty Images
Lea Michele's floral lace dress is cute and it's a flattering shade of blue, but we're most enchanted by her shiny golden-brown hair and natural makeup.
8 of 30 Michael Loccisano/Getty Images
Heidi Klum's choice of gray shoes and accessories (rather than the more usual black or metallics) looks fresh with a black dress.
9 of 30 Stuart Wilson/Getty Images
We get Noomi Rapace's androgynous/menswear look, but this interpretation is a bit too literal (excluding the pumps, of course). It would benefit from more feminine tailoring.
10 of 30 Alberto E. Rodriguez/Getty Images
With the orange tan, tacky bustier dress, purple strands of hair and striped stripper shoes, all Ashley Tisdale needs is a husband to land on one of the Real Housewives franchises.
11 of 30 Frazer Harrison/Getty Images
Michelle Williams goes for a Comic-Con-friendly look with this vaguely sci-fi graphic print dress by Giulietta. It's cute, but the shoes have a formal feel that just don't mesh with this casual dress.
12 of 30 Albert L. Ortega/Getty Images
We will never approve the pajamas-as-day-wear look. Go back to bed Elizabeth Reaser!
13 of 30 Frazer Harrison/Getty Images
Zooey Deschanel continues to reside on Planet Twee. Can we please ditch the hairbands and cartoon-ish accessories?
14 of 30 Jason Merritt/Getty Images
Hayden Panettiere is the quintessential California babe — all blonde hair, golden tan and dressed in the colors of ocean and sand.
15 of 30 Gregg DeGuire/WireImage.com
Statuesque Maria Sharapova radiates "greek goddess" in this cornflower blue fortuny pleated gown.
16 of 30 Frazer Harrison/Getty Images
Here's Connie Britton on her way to the grocery store. Oh, wait, no she's not.
17 of 30 Steve Granitz/WireImage.com
Everything about Cheryl Burke's look just feels off, from the fishtail braid to the drab brown color palette.
18 of 30 David Livingston/Getty Images
Yes, redheads often look terrific in shades of green. And Alicia Witt's bangs and blunt cut are super cute. But she needs to pick either the shiny top or the orange sash — not both.
19 of 30 David Livingston/Getty Images
One day, people will look back back at bat wing dresses like Ricki Lake's and realize that they are the '70s caftans of the 2000s.
20 of 30 Joe Kohen/Getty Images
Missi Pyle's white dress is fairly basic, but we like the way she accessorized with a silver metallic belt and grey shoes. Same color family but a difference in intensity and texture.
21 of 30 Ian Gavan/Getty Images
This Marchesa dress makes Katy Perry look thick through the middle and the poofy skirt is just tacky.
22 of 30 Dominique Charriau/WireImage.com
Elizabeth Banks looks fantastic in this dove grey Versace. Normally, we would say the shoes are too matchy-matchy, but they work here. The metallic silver clutch is exactly right.
23 of 30 Pascal Le Segretain/Getty Images
Christina Hendricks' unflattering jacket looks as though it was borrowed from an entirely different outfit.
24 of 30 Pascal Le Segretain/Getty Images
This studded leather Versace dress harkens back to Jessica Alba's tough-girl Dark Angel days.
25 of 30 Julien M. Hekimian/Getty Images
Marion Cotillard takes this sweet floral babydoll dress in a sexy direction with those sky-high strappy wedges.
26 of 30 Pascal Le Segretain/Getty Images
Diane Kruger's look just screams Carrie Bradshaw-goes-to-Paris.
27 of 30 Marc Piasecki/WireImage.com
Only a native Frenchwoman like Clemence Poesy can pair messy hair and men's brogues with a sparkly Chanel couture dress and get away with it.
28 of 30 Eric Ryan/Getty Images
We like the summery and slightly '70s style of Kirsten Dunst's pink Louis Vuitton maxi dress.
29 of 30 Imeh Akpanudosen/Getty Images
We give a thumbs up to Tiffany Hines' accessories, from the the white metallic clutch to the textured blue pumps. But that dress looks like an ice skating costume.
30 of 30 Eric Ryan/Getty Images
We understand and appreciate Sofia Coppola's flair for chic, minimalist style, but sometimes it just starts to look a little dreary.