Ever since Kelly Clarkson won the first American Idol competition on 2002, this curvy, 5-foot-4 Texan has smashed the reality-star mold with multiplatinum albums and her refusal to waste away into a waif.

“I’m proud of my butt,� says the singer, 24. “I feel sorry for girls who don’t have one.�

Kelly Clarkson’s Diet

“I don’t do the whole diet thing,� Clarkson tells Us magazine. Instead, the two-time Grammy winner – who refuses to weigh herself – brings a personal chef on tour with her.

“It’s all about portion control,� the singer (now a spokeswoman for Vitamin Water) has said. “If you deprive yourself, you’ll just go nuts and eat too much.� Still, she is human. Her weakness?

“I’m a big chocolate fan.�

Kelly Clarkson’s Workout

A high school track athlete, she shed weight in 2004 with 90-minute daily treadmill runs and still hoofs it around concert arenas. “You have to have endurance and be at your utmost health,� says Clarkson.

“I enjoy working out.�

Take-away Tip

Choose fun workouts. The singer stays fit by playing tennis, kickboxing and boogie-boarding. “I drink water all the time,� says Clarkson, who once drank 10 cans of soda a day. [source: Us Weekly magazine]