Fame Pictures Inc.
That was fast!
Nicole Richie seems to have dropped her baby weight overnight.
She stepped out with her little sister, with Joel Madden in tow, to see Selena Gomez's first show on Saturday.
Even though she gave birth to baby Sparrow about two weeks ago, she looks seriously svelte in a black silk romper and sky-high heels.
Although it was a girlie outing for Nic and her little sister, Joel seems to be a Selena fan, too...
"Hey @ Great 1st show!" he tweeted after the concert. "You did great. You should have seen my first show, kept my back to the crowd. You killed it!"
One thing that's definitely killer: Nicole's postbaby bod. How do you think she did it?