The Met's Costume Institute Gala never has a shortage of stars and unlike some of the more official award shows, the global glitterati are typically in the mood to take some fashionable risks. (As one does when Vogue is coordinating the evening.) While we applaud most of them, a few fell short, ahem, literally.

Earning top marks for the evening was cool minimalist Zoe Saldana in backless navy frock by Calvin Klein Collection. Kate Hudson showed some skin in a light pink off-the-shoulder Stella McCartney number with a revealing thigh-high slit. Same for Kerry Washington, who chose a red hot custom-made gown by Thakoon for Gap (the evening's sponsor). Also winning kudos for their Gap collaboration is Sophie Theallet, whose mauve one-shoulder satin frock on Jessica Alba harkened back to the days of 1930s-era sirens.

Katy Perry took home the prize for most innovative ensemble in a Cute Circuit dress lined with LED lights. She kept her power button in her bra and would turn it off and on regularly while traipsing the red carpet, lighting up like a glow stick.

Of course the belle of the ball was Oprah Winfrey who wore a fitted navy blue ballgown by Oscar de la Renta and did not disappoint.

For all their love of fashion, some guests did manage to look a little undone. Long metallic dresses were distinctive standouts for Vogue's Anna Wintour (Chanel Haute Couture), Anne Hathaway (Valentino), and Oscar-winner Marion Cotillard (Christian Dior), but "Top Chef" and new mom Padma Lakshmi should have known better than to dress in a too-tight Roberto Cavalli column with feathers fanning off of her sizable cleavage. (It looked more like something out the "Lion King" rather than legendary Met Ball.)

And though they are among the most compelling actresses of the moment, Tina Fey and January Jones separately failed to capture the essence of Parisian chic in their Yves Saint Laurent ensembles. The former in a bulky one piece, and the latter, in a pretty pink satin cocktail dress that was marred a black overlay that overwhelmed. Of course the three-quarter length gloves and Star Trek-esque eye makeup didn't help either.

Who do you think were the top looks of the night? Peruse the full gallery below and let us know by leaving a comment.