Allison Williams Brings Some Sexy Back to Met Gala After Party 2015

Allison Williams bares her back in a ravishing red dress while heading to the 2015 Met Gala After Party held at The Standard Hotel on Monday (May 4) in New York City.

Earlier in the day, the 27-year-old actress wore a sweeping red gown while walking the red carpet at the Met Gala.

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“Last night was SO fun and beautiful. Thank you to the entire Met Gala team led by @cristinaehrlich who made me over into a Giambattista Valli girl (he is the best date, btw). ??,” Allison wrote on Instagram the next day.