1 of 31 Michael Loccisano/Getty Images
Hit
Heidi Klum works a '70s era Cheryl Tiegs vibe, showing off her long, tanned limbs in these ocean blue colors, complete with matching eye shadow.
2 of 31 Slaven Vlasic/Getty Images
Miss
The combination of ivory and white is pretty, but Jennifer Lopez loses us after that. Why the addition of that tiny, tight belt? And that lacy bodice is matronly.
3 of 31 Frazer Harrison/Getty Images
Hit
Cate Blanchett looks her usual chic self in this Alexander McQueen ensemble, which is accented by a red lip and sideswept bangs.
4 of 31 Jon Kopaloff/FilmMagic
Miss
Kaley Cuoco's matching shorts set is just a no.
5 of 31 Ferdaus Shamim/WireImage
Miss
Famke Janssen's dress looks more like it's wearing her — she appears to be trapped inside this boxlike gown.
6 of 31 Stefania D'Alessandro/WireImage
Hit
We love the unexpected tweedy texture of this pink, strapless dress. Naya Rivera looks great in this color, and the silver sandals add extra flair.
7 of 31 BBC America; Ethan Miller/Getty Images
Hit
Karen Gillan shaved her abundant red locks for a film role and accentuates her new style with this edgy-but-cute androgynous look.
8 of 31 Jason Merritt/Getty Images
Miss
This shapeless dress does no favors for the petite Ginnifer Goodwin.
9 of 31 Stuart C. Wilson/Getty Images
Hit
Mary-Louise Parker shows off her gams in this ethereal gray and silver chiffon dress. A black-accented white clutch and silver Jimmy Choos complete the look.
10 of 31 Jason Merritt/Getty Images
Miss
This dress belongs in an '80s nightclub, not on Kat Graham.
11 of 31 Angela Weiss/Getty Images
Draw
Angie Harmon's leather dress is pretty great, but we'd change the shirt tail hem to a straight one and tidy up that hair.
12 of 31 Ethan Miller/Getty Images
Miss
Did Scarlett Johansson's bags get lost at the airport? We can't come up with another reason to explain these black pumps with this sunny summer dress.
13 of 31 Steve Granitz/WireImage
Miss
We're sure it's not, but Catherine Zeta-Jones' hi-lo lace dress looks cheap.
14 of 31 Kevin Winter/Getty Images
Hit
Helen Mirren's emerald Elie Saab gown could not be more figure-flattering. Coral accessories are a surprising color accent that really works.
15 of 31 Kevin Winter/Getty Images
Hit
Bruce Willis works a Gatsby look in this white linen suit, complete with pocket square and burnished brown oxfords.
16 of 31 Jon Kopaloff/FilmMagic
Miss
Maybe it's our sheer-overlay fatigue or this shade of green, but Diane Kruger's dress just leaves us cold.
17 of 31 David Livingston/Getty Images
Miss
The uneven hem and odd piece of fabric between the straps are ill-advised attempts to "jazz up" Olivia Munn's simple black slip dress.
18 of 31 Jamie McCarthy/WireImage
Miss
Blake Lively's skirt is encrusted with what appear to be those glass stones used for floral arrangements.
19 of 31 Michael N. Todaro/WireImage
Hit
Emmy Rossum's Carolina Herrera gown is an almost. We love the lush floral pattern on the skirt and the overall color scheme, but the design of the top half seems a little awkward. Are we too picky?
20 of 31 Karwai Tang/WireImage
Hit
Kate Hudson's gown shoots for "dramatic" but ends up at "shapeless." Her hair and makeup are stunning, however.
21 of 31 Dimitrios Kambouris/WireImage
Hit
Tadashi Shoji designs yet another lovely dress for his celebrity muse, Octavia Spencer.
22 of 31 Don Arnold/WireImage
Hit
Sandra Bullock goes glam beach babe in this Emilio Pucci dress paired with sky-high Roberto Cavalli sandals.
23 of 31 Jacopo Raule/FilmMagic
Miss
Jennifer Lawrence is wearing a cropped top and pants (?) from the Christian Dior Resort Collection, and it's not really working. The proportions are odd and the aviators, while an ever-trendy fashion accessory, just don't look right here.
24 of 31 Jacopo Raule/FilmMagic
Hit
Kristen Stewart takes this conservative Chanel jacket to an edgier place by pairing it with black cut-off shorts, fingerless leather gloves and killer shoes.
25 of 31 Jacopo Raule/FilmMagic
Miss
We can't help but feel that Naomie Harris left a button undone in this otherwise unnoteworthy outfit.
26 of 31 Bertrand Rindoff Petroff/Getty Images
Miss
It's really time for Nicky Hilton to update her look — she's been wearing similar outfits for a decade.
27 of 31 Pascal Le Segretain/Getty Images
Miss
Nothing in Milla Jovovich's ensemble seems to work together — the shirt is too casual, the bag too dressy, and the skirt is just frumpy.
28 of 31 Pascal Le Segretain/Getty Images
Hit
Leelee Sobieski's Christian Dior look is a variation of Jennifer Lawrence's outfit, but the solid color and lack of exposed torso create a more flattering look.
29 of 31 Mike Marsland/WireImage
Hit
Sarah Jessica Parker's silver-fringed Naeem Khan is just gorgeous and shows off her legs and shoulders to great advantage. She could stand to lighten up on the eyeliner, however.
30 of 31 Bertrand Rindoff Petroff/Getty Images
Hit
This may not be for everyone, but we love the androgynous quality of Clemence Posey's bow-tied Chanel jacket and skirt.
31 of 31 Jacopo Raule/WireImage
Hit
Uma Thurman looks great in this simple but sexy black dress (note the cutout details down the sleeves), and the wavy, undone hairdo is fantastic.