Not that we doubted it before, but Kristin Cavallari has some seriously good genes.
The new mom and former Dancing With the Stars contestant tweeted a new photo of her post-baby body that is bound to make some new mothers weep.
In the photo, The Hills starlet shows off her skinny body in shorts and a printed tank top.
“Girls night!! Yes at 6pm haha,” Kristin tweeted with the photo.......