Sailor Brinkley Cook in Bathing Suit is "By the Sea Shore"

Sailor Brinkley Cook is collecting seashells in the tropics – in her bathing suit. The model and daughter of Christie Brinkley flaunts her famous figure in a red and white striped swimsuit in one of her latest social media posts. "Sailor sells sea shells by the sea shore," she captioned the stunning image. How does the 23-year-old maintain her fit physique? Read on to see 6 of Sailor Brinkley Cook's top 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 Bikini Photos!

Sailor has battled body confidence issues. "I've grown up with a lot of body issues. I spent my entire life being so insecure," she told InStyle. "When I did my first bikini shoot, I was worried because I don't even have boobs; I'm a B cup. I don't have all of these intensified assets that many bikini models do. Why should I be considered sexy?" However, modeling has helped her embrace her self-esteem, giving her the confidence to "own" who and what she is "at such a bare, raw state," she continued. "I really felt like I was celebrating my body and my womanhood." She has also shared about her body dysmorphia on Instagram. "I've been so down on myself recently. Crying about my cellulite, letting the fat on my body ruin my day, getting mad that I'm not as skinny as I once was," she wrote in one post. "The body dysmorphia and left over eating disorder tendencies have been coming in strong. "As I come into myself as a young woman my body shifts and changes by the month, the 'control' I felt I once had over it has been completely stripped away from me. Hormones, emotions, growing pains."

Sailor makes exercise a daily habit. "In general, I try to work out every day. A normal workout would start with cardio. I'm a big runner—I try to run two miles a day. Then I work out with my trainer at Work Train Fight, doing HIIT workouts like burpees and lunges. If I need a day off, I'll do yoga or something low-intensity," she told InStyle. For a full month leading up to a shoot she works out even harder. "I work out like an athlete. I add on weight training, I box, and really push my muscles," focusing on her abs.

To prep for a shoot, the first thing Sailor ditches from her diet is sugar. "I start cutting sugar 10 days before. Every time I stop eating sugar, it's immediate, and when you're going to the gym every day, cutting out sugar changes the game. I see myself getting a lot more shredded," she said.

Hydration is always a priority for Sailor, who drinks extra water up a week prior to a shoot. "You want to be hydrated because it shows up in the way your skin looks, in the way that your body looks, in the way that you're acting and feeling," she told InStyle. "24 hours before a shoot, I'm drinking a crazy amount of water—I'm talking like three gallons."

Sailor's diet is extremely healthy and nutritious. "I eat as clean as possible," she revealed to InStyle. "Lots of lean protein. I'm vegan so I can't have grilled chicken or salmon, but I go for salads with quinoa and beans and fresh vegetables and then something light, like a sautéed vegetable dish, for dinner."

Sailor's go-to de-stressing method? Walking. "I think that's a really underrated thing people don't do enough when they're feeling stressed out. Especially in the city, I'll put my phone in my pocket, put my headphones in, and I'll just play my favorite music and take a walk around the city. You just see all these different people of all different walks of life, and the art on the streets, and little fluffy dogs. All these little things remind you that, Okay, we're all in this together, we're going through it, you've got to make the best of it. That really helps me a lot when I'm feeling chaotic," she told Glamour.