Nicole's A Skinny Minny Once Again

This weekend, many celebs attended the March of Dimes 4th Annual Celebration of Babies held at The Four Seasons Hotel in Beverly Hills. The event works as a fundraiser while recognizing celebrities who’ve recently had babies.
And on the red carpet was none other than Nicole Richie.
Richie gave birth to her second child, Sparrow James Midnight Madden just two months ago. But you’d never guess it by looking at the pictures!
What is her secret????
[Image via WENN.]