Slim and Healthy like Hollywood Stars

Rihanna Said

"Cardio, cardio, cardio!" the SOS singer, 21, tells OK!. I prefer the treadmill. When I perform I dance so much it helps me stay in shape."" She's ditched crabs for egg whites, veggies and fish - but sometimes nibbles a little KFC (hot wings are her fave).

How to get Her Body

• Step 1

Start exercising three to four times per week like Rihanna, who endures vigorous sessions with her personal trainer. Try signing up for a training session of your own at your local gym, or simply use an intense exercise video at home.

• Step 2

      Add cardiovascular exercise (like running on the treadmill) to your workout routine, and start strength training with light weights. Rihanna focuses on her lower body with a wide variety of toning moves--including squats, lunges and glute presses--and is careful to train her arms minimally to create lean muscle.

• Step 3

Control portion sizes while eating, which is Rihanna's primary tactic for slimming down. Try eating four to five small meals per day, consisting primarily of lean protein or fresh produce.

• Step 4

Create your mini-meals by choosing healthy and organic foods like egg whites, salads, green vegetables and fresh fruit. Like Rihanna, decrease carbohydrate intake drastically, replacing carbs with lettuce, carrots or lean chicken instead.

• Step 5

Rihanna favors snacks like cucumbers, soup and pineapples, which are high in water content (making them low in calories and great for weight loss). Drink water throughout the day--like Rihanna, who starts her mornings with lemon-infused water.