Stars Show Off Their Bikini Bumps!

From Kourtney Kardashian to Kelly Rowland and Rachel Bilson, see which moms-to-be look just swell in swimwear

CAMILA MCCONAUGHEY

While expecting son Livingston, the model mom bared her bump in a tiny black bikini and white sarong while on vacation in Ibiza, Spain, with husband Matthew in August 2012.