1 of 24 Joe Kohen/Getty Images
A red chiffon dress, some rosy blush and a cute ponytail create a glowing, youthful look for Ali Larter.
2 of 24 Bryan Bedder/Getty Images
Serena Williams' hair and makeup have a soft look that plays well with this figure-flattering light blue dress.
3 of 24 Taylor Hill/FilmMagic
Heidi Klum's silver mini dress has a lack of definition through the middle that makes her look thick-waisted. And the rectangular cleavage is just tacky.
4 of 24 Fotonoticias/WireImage
Lily Collins' lacy mullet dress is a disaster.
5 of 24 Taylor Hill/FilmMagic
This teal shade is pretty on Olivia Wilde, but the elaborate strapping around the bodice just looks uncomfortable.
6 of 24 Tim Whitby/Getty Images
Elizabeth Hurley's gown just looks outdated — and not in a cool, vintage way.
7 of 24 Jason Kempin/Getty Images
Did Aubrey Plaza just run over here from the dressmaker's shop? This has the look of things pinned together for a fitting, rather than a finished product.
8 of 24 Don Arnold/WireImage
Is Cate Blanchett wearing a bathing suit under this?
9 of 24 Angela Weiss/Getty Images
AnnaLynne McCord's dress is a little too middle school graduation.
10 of 24 Jamie McCarthy/Getty Images
We love how the print changes from black and white to color on Julia Stiles' stylish sundress. The black belt and booties give it a little edge.
11 of 24 David Livingston/Getty Images
Anna Torv's dress is cute, but the shoes are a little clunky and she could use a brighter lip.
12 of 24 Jon Kopaloff/FilmMagic
Miley Cyrus' superpower is her ability to make expensive designer labels (Proenza Schouler in this case) appear as if they were purchased on sale at Forever 21.
13 of 24 Jon Kopaloff/FilmMagic
Amber Heard looks like she just threw on whatever she could find laying around and hoped for the best.
14 of 24 Gregg DeGuire/WireImage
We like the shade of plum and Stana Katic's updo, but the fit of this dress leaves something to be desired.
15 of 24 Jon Kopaloff/FilmMagic
Jodi Foster's Roland Mouret dress, while pretty, is just so..."work appropriate."
16 of 24 Karwai Tang/Getty Images
The hologram belt and stripes down the back of Rachel McAdams' stunning white gown give it a cool sci-fi twist. And we love the new red hair.
17 of 24 Jon Kopaloff/FilmMagic
Amanda Seyfried's minimalist bun and bare sandals balance out this showy, copper-studded Gucci dress. The gold tips on the stiletto heels and the smoky eye may seem like small details, but they add impact to the whole look.
18 of 24 Angela Weiss/Getty Images
We're alternating between "frumpy" and "cartoonish" to describe Julia Louis-Dreyfus' dress.
19 of 24 Charles Norfleet/FilmMagic
Opinions on Heidi Klum's ensemble will depend a great deal on your feelings about '80s fashion.
20 of 24 Steve Granitz/WireImage
Harrison Ford's suit is fine, but Calista Flockhart needs to ditch those clunky shoes and tiny, girlish purse. The overall matchy-matchy look is too wedding party.
21 of 24 Valerie Macon/Getty Images
Twilight scribe Stephenie Meyer may be an expert in all things vampire, but she could use a wardrobe consultant.
22 of 24 Gilbert Carrasquillo/FilmMagic
Minka Kelly's maxi dress has a pretty pattern, but that strap is so bulky. It looks like she's carrying a messenger bag.
23 of 24 Jeffrey Mayer/WireImage
All we're seeing here with Sophie Bush's gown is "mermaid costume."
24 of 24 Imeh Akpanudosen/Getty Images
Jane Seymour should have chosen different accessories. The silver jacket, shoes and bag is just too much.