Amelia Gray is having a foam party. The celebrity spawn flaunts her famous figure in a neon green swimsuit for designer Alexander Wang's latest campaign, soaking wet and surrounded by bubbles. How does the 20-year-old maintain her fit physique? Read on to see 5 ways Amelia Gray Hamlin stays 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!

Amelia is very open about her health struggles, specifically her eating disorder. "When I first started struggling with anorexia, I loved when friends would comment on my weight," she told Glamour in 2019. "I have a distinct memory of running into a friend at the mall, right outside Victoria's Secret. She put her hand on my waist and was like, 'Oh, my God, Amelia, you're so skinny, you need to stop!" I loved those comments. They felt amazing, as psycho as that sounds. It was this feeling that fed my eating disorder." 

"In the wake of my anorexia, I was diagnosed with Hashimoto's disease, an autoimmune disease that screws with your thyroid," she also told Glamour. "My body was reacting to being starved for so long. With Hashimoto's I'm going to have to take two pills every single morning as soon as I wake up, maybe for the rest of my life. Obviously that's not the worst thing in the world, but it's hard knowing I did this to myself."

Amelia fuels her body with healthy things. "All of this has made it so important to me to nourish my body. I used to hear all the time, 'Your body is a temple!' but I really didn't care. I didn't care how many nutrients my body was getting," she told Glamour. "Learning about how to nourish my body and how to fuel my body with the foods that make my body happy and energized makes me feel good. Despite all the bullshit and the hard parts of recovery, that's been a really fascinating part of this journey: I've come out of it with such a different passion for health."

If Amelia could talk to her former self she would say that "confidence is the most beautiful trait a person can have," she explained to Glamour. "It transcends weight, and size, and social media filters. When you truly love yourself on the inside, the way you carry yourself is so different. I think that's when the judgment stops—when they realize that nothing they can say about you or your body will make a difference."df44d9eab23ea271ddde7545ae2c09ec

Amelia is one of the many stars who trains at The Dogpound, a bicoastal gym boasting strength training and HIIT style workouts. "High-intensity training usually entails a higher heart rate training zone, which means you reap more benefits in a shorter amount of time. This training style is ideal for those with restricted time frames, stagnant or plateaued workouts, and/or individuals with little-to-no equipment and small workout spaces," says ACE Fitness.