February 23rd, 2012
04:37 PM ET
After making the decision to eat healthier seven months ago, "Glee" star Amber Riley has been hitting the red carpet - such as the one rolled out for 26th birthday party in Las Vegas, seen above, last weekend - with a slimmer physique.
The actress told People magazine that chronic stomach pains prompted her to rethink her diet last July.
Instead of fast food and burgers, which Riley said were "attacking" her stomach, "I decided I was going to make a change and eat healthier," she recalled.
Her new focus on feeding her body healthier fare caused Riley to drop two dress sizes.
If you're a "Glee" fan, you may have noticed the costume shift - Riley says they've had to "revamp the wardrobe...they bought a lot of new clothes for me, and we have to take in a lot of my pants and dresses."
But the star says all of that was an unintended side effect.
Although she's now a "lot more comfortable in dresses, especially gowns," Riley adds that her new outlook on eating wasn't about weight.
"I've always been comfortable with my size," she says. "I just decided to get healthy."
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