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It’s hard to believe that Lindsey Vonn has insecurities. The blonde beauty has gained popularity both in the sports world and as a celeb, and she’s linked to Tiger Woods, who she said has helped her through her recent devastating knee injuries.

Yet she said last year’s Met Costume Gala in New York City was tough to attend.

“It was hard to go to the Met ball [last May], with people who eat lettuce and a Diet Coke for dinner. It's difficult to be at events with a room full of women who weigh half as much as you do,” Vonn told SELF magazine in their latest issue, on newsstands Jan. 28.

But she doesn’t want to be like those girls, she declared.

“I don't envy them, though, because so many of them are skinny-fat. They have more cellulite than most people,” she said of some of her fellow stars. “I feel like I need to give them a cheeseburger. It's sexy and beautiful to be strong.”

Her boyfriend helps her stay strong, she said.

“We're good for each other. I don't know what he's learned from me, to be honest. But we push each other and help each other when we're down.”

His encouragement has been more important recently, she explained. Earlier this month, Vonn announced she wouldn’t be competing in the Olympics because of her knee issues.

“He's helped me stay patient through rehab,” she said. “Golf is all about patience—one tournament is four days long, 18 holes a day. He helped me take it one day at a time. I'd say, ‘Why can't I do this? I want to!’ And he'd say, ‘You'll get your chance. It will come.’”

Click here for more from SELF magazine.