The Insider.com

If you did a double take when you saw pictures of Amber Riley at the NAACP Image Awards, you're not alone. The Glee star turned plenty of heads recently, when she showed off a noticeably slimmer physique in a tight-fitting blue sequin Theia gown.

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"I dropped two dress sizes!," Amber confirms to People.

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Amber credits her weight loss to changing her eating habits, a change brought on when chronic stomach pains forced her to see the doctor.

"I decided I was going to make a change and eat healthier," she says, and she started by cutting out the fast food and burgers that "were attacking [her] stomach."

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However, she stresses that the weight loss is not for aesthetic reasons -- rather, she just want to get healthy.

"I've always been comfortable with my size," she says. "I just decided it was time to get healthy."