Las Vegas will always be there for Marie Osmond! While performing at the Flamingo hotel-casino with her brother Donny Osmond, the superstar siblings have been having the time of their lives, but that doesn’t mean that Marie has stopped working on other projects. In fact, she recently told Closer Weekly that while she’s been “offered movies and Broadway shows,” she still gets excited to work with Nutrisystem.

“People ask me why and it’s because I could never have done anything I’ve done in the past 10 years if I didn’t have the help I received from Nutrisystem,” she exclusively said. “They helped me get 50 pounds off of my body! I could never wear the shoes or clothes I wear, or do the dancing and singing [without the weight loss].”

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Marie’s Las Vegas performances are so demanding that they have taken a huge toll on her body. Not only does she have to sing her heart out in every show, but she also has to do it while dancing and wearing a flashy costume.

“I sing everything from country to opera in the Vegas show. You can’t do those kinds of things with the weight on you,” she explained. Getting on-stage day after day has caused Marie to lose plenty of weight and with the help of Nutrisystem, she’s able to keep it off.

“I lost 50 pounds and I have maintained my weight for 12 years. Nutrisystem taught me how to live a healthier lifestyle by making better food choices,” she gushed. “Food is not my enemy, it’s my energy. It’s about having a healthy body, not about being skinny.”

Making better food choices wasn’t easy for Marie. As a young adult, she was in a constant battle with her weight and there was even a time when she felt embarrassed by her outward appearance. “I remember being at The Andy Williams Show and overhearing executives saying, ‘Boy, those Osmond Brothers are so talented. Too bad they have a fat sister!” she recalled.

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Marie soon learned to live a healthier lifestyle using Nutrisystem and now she doesn’t feel ashamed to eat all of her favorite foods again. “Pizza, ice cream, chocolate,” she said excitingly. “[Nutrisystem] made them healthy enough to get the weight off while teaching you how to eat properly. They do all the work, all you have to worry about is eating.”

For more on your Marie Osmond, pick up the latest issue of Closer Weekly, on newsstands now — and be sure to sign up for our newsletter for more exclusive news!