Checkout more pictures of celebrities at the 2012 Met Ball.
The crowd went wild when the new mom stepped onto the red carpet, and with good reason. She was stunning in her show-stopping Givenchy couture gown. The two-toned, feather-and-sequin detailed frock left little to the imagination with a nude bodysuit covered in black lace. She let the dress sing by keeping her makeup light and wearing a sleek ponytail.