A pregnant Spears bonds with her stepdaughter. Plus: Jennifer Garner and more

WALKING THE WALK

Having a good time for a good cause, Dwayne "The Rock" Johnson and Halle Berry share a laugh at the 12th Annual Revlon Run/Walk For Women in L.A. on Saturday. The actors, along with Desperate Housewives star Marcia Cross, cohosted the event, which raised money to fight women's cancers.