Mother's Day 2013

Star Moms: Body After Baby

Penélope Cruz! Ali Larter! Amy Adams! These celebs dropped the pregnancy pounds – and regained their fab pre-baby figures

ALI LARTER

The new mom, who packed on 45 lbs. during her pregnancy, is taking things slow after giving birth to son Theodore on Dec. 20. "I just started to hike and do a little pilates too," the actress told PEOPLE recently. "I think everyone would love to drop their baby weight as quick as possible but I gained quite a few so it's taking a little bit longer." Either way, Larter is making great strides: Four months after giving birth, she strutted her stuff in a waist-cinching Dolce & Gabbana polka dot mini at Good Housekeeping's Shine On Awards in N.Y.C.