Christie Brinkley in Bathing Suit Shows Off "Bikini Body"

Christie Brinkley is is putting in the hard work building a cabana and maintaining her hot body! “I’m still working on my Driftwood Cabana and my bikini body… so If Im going to have a cocktail it’s def going to be my #zerosugar #zerocarb,” she captioned her latest Instagram post, flaunting her famous forever young figure. How exactly does the beauty manage to make 68 look like 48? Read on for 7 of Christie Brinkley’s top rules 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!

1. Rule 1: Move

Christie is constantly active. “Don't stop moving because you'll rust. You have to grease the joints and keep moving," she told The Cut. "As long as I do that I feel great. If you start to hold still, they'll start acting up." She manages to squeeze exercise into daily activities. "While I'm brushing my teeth, I'm doing leg lifts. When I'm drying my hair, I do all kinds of squats,” she added.

2. Rule 2: Eat Heavy in the Morning

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Christie doesn’t skimp when it comes to her first meal of the day. "A lot of mornings lately I will take a bowl and I throw some oatmeal right into it," she told Shape. "I rarely have time to cook it so I just eat it raw. Then I'll pour some flax seed on top of that and maybe a little wheat germ, then I'll grab a couple of handfuls of blueberries, blackberries, raspberries and rinse them off, toss them in and then I pour one of those Dannon things on top and stir it up. I always describe it…it's like a really moist juicy muffin. It is so good. I feel like it is giving you a lot of good things. You can also throw a handful of walnuts in there."

3. Rule 3: Focus Your Diet Around Plants

Christie follows a plant-based diet. "I haven't touched a piece of meat since I read a graphic description of Chicago's slaughterhouses when I was 12," she told Harper's Bazaar. Her diet is almost entirely vegan. "I call myself a flexible vegan because, you know, Italy exists. Mozzarella and pasta exist. In France, I may have to have a piece of Camembert, you know. Un petit sandwich au fromage,” she added to The Cut.

4. Rule 4: Eat the Rainbow

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Christie follows the rainbow diet. "For lunch, I go into greens and do a salad, then add a protein like a bean or nuts," she explained to The Cut. "For many, many, many years, I've always said go for as many colors as possible in a day," she said. "That's my main concept for making sure my kids get all the nutrients—making sure the deep greens, yellows and reds and purples, all of that."

5. Rule 5: Drink Warm Water with Lemon

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Christie starts the day with an incredibly healthy drink. "I start every day with warm water and lemons. It's something I picked up on my Instagram," she told The Cut. "Some days I alter it, and I get fancy and I put a little bit of mānuka honey on the rim of the glass, turn it upside down, and dump it in red cayenne pepper. Then I put the lemon juice in and then the hot water. That's when I have a little time. I figure that the pepper gets my system all revved up, and the lemon water gets everything flowing through."

6. Rule 6: Exercise Outdoors

Christie likes to get her sweat in fresh air. "When I was doing Chicago, I noticed that the second you do any activity and you add your arms as though you're dancing, it revs you up. Whether it's walking down the beach and moving your arms like you're swimming, or picking up rocks and walking with them, you really start sweating and breathing heavily," she told The Cut. A few other outdoor activities she loves? Cycling, paddleboarding, surfing, skiing, and swimming.

7. Rule 7: Don’t Sweat Alone

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Christie is a big proponent of group fitness. "Everyone asks if I really use the Total Gym, and I do! It's perfect for stretching and lengthening my body. Last summer I got into SoulCycle, and in the winter I do yoga at Yoga Shanti,” she told Harper’s Bazaar.