From PEOPLE Magazine Click to enlarge
SAMANTHA HARRIS

3 WEEKS AFTER

Just a month after daughter Josselyn was born in September, Harris was shocked to find, "I'd lost all but 4 lbs. of the baby weight," says the Dancing with the Stars cohost, "but I was still two jeans sizes bigger!" To get those numbers in line, Harris, 33, hit the gym for yoga and sculpting classes. "I'd like to tighten the abs—there's flabby skin that wasn't there 10 months ago," she says. Fat-free frozen yogurt is a treat these days, as she mostly eats fruit, fish and steamed veggies. Though viewers were shocked to see her on camera only three weeks postpartum, Harris insists she's in no rush. "It took nine months for my body to get this way. It could take time to get it back."

BRIDGET MOYNAHAN

4 WEEKS AFTER

The actress, 36, started working out a month after son John was born in August but "doesn't feel she's there yet," says a friend. She's also cut white sugar out of her diet, because "she's breast-feeding—she's still eating for two."

JENNA ELFMAN

10 WEEKS AFTER

Less than three months after the July birth of her son Story, Elfman showed off a svelte physique on the set of The Six Wives of Henry Lefay. How did she do it? "I've been eating a common-sense diet, walking and doing light weights—nothing too crazy," says Elfman, 36. "And I think the breast-feeding has really helped."

ALI LANDRY

11 WEEKS AFTER

Less than 10 lbs. off her pre-baby weight of 135 lbs., Landry, 34, eats a meal-delivery diet (plus a little chocolate), walks and lifts weights. "My workout can't be longer than an hour," says the breast-feeding mom of Estela, four months. "Then I have to feed her again!"

NAOMI WATTS

12 WEEKS AFTER

Pilates during pregnancy helped Watts, 39, rebound after welcoming son Alexander (with boyfriend Liev Schreiber) in July. But Watts admits she relies on "solid undergarments" since giving birth: "Good classic lines can help cheer up an out-of-shape body."

  • Contributors:
  • CONTRIBUTORS Charlotte Triggs,
  • With Monique Jessen,
  • Monica Rizzo,
  • Ashley Williams.