Hollywood's Hottest Mamas

Kristin Cavallari! Jessica Alba! Beyoncé! See star moms showing off their sizzling post-baby bodies in sexy swimsuits

BEYONCÉ KNOWLES

Well, that was fast! A little over a year after giving birth to daughter Blue Ivy Carter, the super-voluptuous singer put the "B" in "bombshell" while modeling her H&M swimwear line on April 15.