Charli D'Amelio is celebrating her birthday in her bathing suit. The influencer shows off her incredible figure in a black bathing suit in one of her latest social media posts. "Thank you all for the birthday wishes!!! i love you," she captioned the Instagram post. How does she stay so fit? Read on to see 5 of Charli D'Amelio's top diet and fitness tips for staying in shape and the photos that prove they work—and to get beach-ready yourself, don't miss these essential 30 Best-Ever Celebrity Bathing Suit Photos!

Charli regularly trains with Ben Bruno, trainer-to-the-stars. She, her sister, Dixie, and mother Heidi work out together. In a recent TikTok video, they do a variety of strength and weight training exercises. You can also train with her via the FitOn app. Physical activity is anything that gets your body moving. Each week adults need 150 minutes of moderate-intensity physical activity and 2 days of muscle-strengthening activity, according to the current Physical Activity Guidelines for Americans.

Charli loves to dance. In a recent interview with People, the star, who skyrocketed to fame showing off her moves on TikTok confessed that she had lost her passion until she went on Dancing with the Stars. "You know, dance wasn't something that I found fun anymore. It was something that was more just, I did to do it and, you know, it was over when it was over and I didn't look forward to it anymore. And I think with Dancing With the Stars every week, it's like, you know, I'm hearing from other people that I finally look like I'm having fun," she said. "I look happy and I'm feeling, kind of, those same things that I used to feel when I was younger, dancing, that I kind of lost and thought that I wouldn't find again," she said. "Just because it had been so long without being that excited for performance. To be able to do that again is really a full circle moment for me and just makes me really happy."

Charli engages in the occasional cheat meal. Her go-to? Dunkin Donuts, who she ended up partnering with. "The Dunkin Donuts collaboration came about after a lot of free promotion. For a while, everyone thought I was getting paid. But I was not. I just shamelessly promoted and promoted because I really wanted to work with them. And then they finally gave me the opportunity and I immediately took it. And since then, we've come out with two of my own drinks on the menu and sold-out cold brew nationwide. It was a really big hit for me. And it was a really great feeling seeing all of that come together. It was definitely a lot of my determination to work with Dunkin Donuts," she told Forbes.

Charli is an eating disorder survivor, which she opened up about on her reality show. "Whenever I first started TikTok … I was very unhealthy," she says. "I would lose a bunch of weight, and then gain a bunch of weight, and then lose it, and my comments would switch up with that," she said. She confessed that after binge sessions she would make herself sick and then starve herself. "It was really bad," she said. "You could see it because I'm short, so when I put on weight people would be like, 'Oh, you gained weight,' and then they're like, 'Oh, she lost so much weight, she looks so good.'" At her thinnest, she was trolled for being "skin and bones." "I let it get to me and I wish I didn't," she added.df44d9eab23ea271ddde7545ae2c09ec

"It's extremely hard to go from having a very unhealthy mindset with food to a healthy one, especially when you've dealt with it alone for so long," she added, revealing that she ended up meeting other influencers and having an open discussion about it all. "At least now I have friends that I can talk to and that made me work so much harder to get a healthy relationship with food again."