Alba flaunts her post-baby body while vacationing in Mexico with hubby Cash Warren. Plus: J.Lo & Casper, Ben Affleck, Olivia & Jason and more

COUPLE TIME

Lookalike spouses Gwen Stefani and Gavin Rossdale snag a moment for themselves while out with sons Kingston and Zuma (not pictured) at Underwood Family Farms in L.A.