All eyes were on Jessica Simpson over the weekend.

While Sofía Vergara and Irina Shayk covered their curves for the White House Correspondents' Dinner Saturday, Simpson took a different approach. She modeled a strapless Carolina Herrera gown—highlighting her impressive weight loss—and walked the red carpet with her fiancé Eric Johnson, who wore Ralph Lauren. "It's definitely chaotic," she told USA Today of the big event, "and I should not be wearing a train on my dress. I don't know what Ms. Herrera's going to say when I get it back to her."

For the afterparty, Simpson changed looks. She risked a nip slip by wearing a low-cut black dress that also featured a thigh-high slit. "After the prez it's the after party," she wrote in an Instagram caption.

No matter her size, Simpson is known for drawing attention to her cleavage. Ten years ago, her father Joe Simpson told GQ, "Jessica never tries to be sexy. She just is sexy. If you put her in a T-shirt or you put her in a bustier, she's sexy in both. She's got double D's! You can't cover those suckers up!"

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