Mother's Day 2013

Moms-to-Be Who've Dared to Bare!

From Kelly Rowland and Christina Aguilera to Shakira and Jessica Simpson, see which stars have stripped down to belly basics

JESSICA SIMPSON

Not only did the mom-to-be reveal it all on the cover of Elle's April 2012 issue, but she also confirmed she was expecting a girl with fiancé Eric Johnson. "I swear, I will croak if she asks me for a pair of Nikes instead of Christian Louboutins!" Simpson joked of daughter Maxwell, born May 1.