June 02, 2014 12:00 PM

KIM KARDASHIAN

The reality star, 33, shed the pregnancy pounds in time for her May 24 wedding to Kanye West thanks to daily workouts and an Atkins-based diet. “Losing this weight has not been easy, but I did it, and that’s so rewarding,” she said.

BIGGEST LOSER CONTRO

Rachael Frederickson’s 155-lb. weight loss caused gasps – and concerns – about the lengths the voice-over actress, 24, went to win the reality show title.

KEIRA KNIGHTLEY

The actress, 29, triggered tiny-waist envy in a Chanel optical illusion dress.

ZAC EFRON

The actor, 26, lost his shirt while giving his acceptance speech for best shirtless performance at the MTV Movie Awards in April.

EMILY BLUNT

For her “initiation to the action world,” Blunt, 31, did gymnastics, weight training and Krav Maga. “I really wanted to be prepared,” says the British actress about keeping up with Tom Cruise in Edge of Tomorrow. Mission accomplished.

RIHANNA

The singer, 26, rocked a $990 crystal-studded bikini in Barbados last December.

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