Celebrity Slim Down

UPDATED 02/21/2011 at 01:00 AM EST • Originally published 02/21/2011 at 01:00 AM EST

Raven-Symone, 25

With help from nutritionist Philip Goglia, she eats six small meals a day and exercises three-plus times a week for an hour. (Kickboxing is a fave!) "It feels good to put something on and not have a girdle underneath!" she says.

LOST 70 LBS!

THEN NOV. 2008

Tim McGraw, 43

As he got older the singer-actor realized "you can't eat as much, and you have to work out twice as much." So he cut down his burger intake and added a 5-mile run to his preshow ritual. Now 40 lbs. lighter, "I feel young."

DROPPED 3 SIZES!

THEN AUG. 2007

Meghan McCain, 26

The conservative columnist lost 15 lbs. by giving up white bread and pasta and taking up hiking. "I never found an exercise I loved before," says McCain. "I'm not superskinny. But I feel healthier."

LOST A DRESS SIZE!

THEN JUNE 2009

Gerard Butler, 41

The Scotsman knows his worst habit is "a pig-out binge late at night." But Butler now has that weakness under control. "He focused on eating healthy and working out," says a source close to Butler.

NO GUT, ALL GLORY!

THEN JAN. 2010

Mandy Moore, 26

The Tangled star recently confessed to a "decadent dinner" on Twitter, but she can afford it: For the past year, "she's made a conscious effort to eat healthy, do Pilates a few times a week and go hiking," a friend says of Moore.

LOVES PILATES!

THEN NOV. 2007