Ashley Tisdale in Bathing Suit Has "Best Girls Tip Ever"

Ashley Tisdale is heating up Hawaii in her swimsuit. The High School Musical graduate shows off her toned body in a bathing suit in one of her latest social media posts, while vacationing with her family in the tropics. "Best girls trip ever! Had so much fun in Maui with my mom and little lady. Thanks @fsmaui for making it so special," she captioned the Instagram snaps. How did the mother-of-one get into the best shape of her life after welcoming her first child? Read on to see 5 of Ashley Tisdale'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!

Sometimes the simplest workouts are the most effective. Ashley maintains that walking helped her get into her best shape ever. Her trainer, Harley Pasternak changed her body "tremendously and honestly it's all about getting your steps in," she said in an Instagram Story. "His method isn't hard and my body isn't left feeling like I tortured it. I can't believe what my body has gone through over the last year and a half. I'm so grateful for it and honestly can't believe how strong I feel." Wearing a Fitbit, she aims for 14,000 steps a day. "All I do is walk lol but it's effective," she said."I'm only sharing this because after months of working hard and trying everything, these small changes in the last three weeks is what have done the most," she continued. "It's the difference of how I feel. It's all about moving, finding ways of walking. Taking the dogs out with the baby for a stroll, taking meetings while walking vs. sitting." She also claims it is good for her mental health. "It's honestly what has helped my mental health as well," she added. "Having the extra energy from anxiety, just taking a walk and putting on a walking meditation always makes me feel better."

Tisdale, has "borderline thyroid disease," so she focuses on doing low-impact workouts to help her condition. 

Ashley mixes up her workouts, doing group classes on her own and hitting the trails. "I've worked my butt off. Whether it's hiking, Pilates, riding on my Peloton," she wrote on Frenche. 

She also revealed on Frenche that diet is a big part of the equation. "While I haven't mastered his recipes yet, I'm excited to dive deeper into them. He always says, 'you can't out-walk a bad diet,' and I'm trying to live by that too," she said about Pasternak's plan. "In the past, I practiced yo-yo dieting that wasn't sustainable instead of focusing on making lifestyle changes. That's ultimately the opposite of Harley's methods. He emphasizes the importance of fueling the body with food rather than depriving it of certain foods. My entire point is that while it's easy to get caught up in wanting fast results from your diet and exercise regimen, it's not a healthy mindset to have. It's not a race; it's a lifestyle, so I'm sure the more I do it, the better I'll get at it."

"Skin never looked so good," Ashley said in an Instagram video about ditching dairy. "I would love to say it's just the products I use but I've been dairy free for 5 years and I swear it changed everything with my skin. I barely break out," she added. "I know it's hard to give up something but when you do, after awhile, you barely crave it and I feel healthier." She has also revealed that she avoids gluten.