Jessica Simpson poses with friends at the White House Correspondents' Dinner after party on May 3.

Two looks in one night! Jessica Simpson already made headlines when she walked the red carpet at the White House Correspondents' Dinner in a black and white printed Carolina Herrera gown with fiance Eric Johnson

But she didn't stop there! Afterwards the mother of two, 33, slipped into a strapless black gown with a large slit up the leg for the Bloomberg Vanity Fair after-party and posed with some friends for a model selfie. 

"After the prez it's the after party #whcd," she captioned the photo goofing off with her friends. 

The Weight Watchers spokeswoman continued to look slender in the second gown after impressing the country and her fellow A-List attendees. 

"This body made two amazing little human beings," Simpson said in a February Weight Watchers commercial. "I love this body and what it's capable of—no matter what size. But this version," she said, gesturing to her svelte physique, "feels really good. My body, like my life, is a work in progress, but I'm getting there, with Weight Watchers."