Amanda Holden in Bathing Suit Celebrates Boxing Day

Amanda Holden—star of  Britain's Got Talent on ITV and celebrated West End performer—honored the day after Christmas in style. "Bottoms up #boxingday," she captioned a photo of herself in a bathing suit, as she stands in blue waters. How does she stay so fit while keeping so busy? Read on to see 5 ways Amanda Holden 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!

Holden is open about living a vegetarian lifestyle and is a spokeswoman for PETA. While some people might think that being a vegetarian is difficult, Holden says to PETA that she thinks it's pretty easy. "​​To anybody that thinks being a vegetarian is tricky – it's rubbish! There are so many products you can buy – meat substitute products if that's what you want. Vegetables, lentils, pulses – there are a million things that you can cook and use to substitute for meat."

Whenever the weather is nice, Holden makes sure to take advantage of it. One of the things she likes to do is hit the beach, or enjoy time in the pool. Holden has posted several photos and videos of herself on Instagram at the beach or at the pool.

When Holden goes to the beach, she likes to stand up paddle. She posted this video on Instagram of herself using a stand up paddleboard in the water. She captioned the video, "Go over to my stories to see a very funny version."

Holden tells GoodTo that she makes sure to eat a healthy breakfast, and she has a favorite meal. "I like to have something wholesome for breakfast. I start the day with a bowl of sugar-free Alpen."

While Holden says that she tries to eat healthy, she admits to GoodTo that she does indulge once in a while. Holden says that she tries to eat a balanced diet. "I don't believe in half-fat anything. I have full-fat yoghurt, butter and cheese. And I splurge on the weekends."