Olivia Wilde Shares Swimsuit Photo Wishing Friend "Happy Birthday"

Olivia Wilde wishes her friend a Happy Birthday in her swimsuit. In one of her latest social media posts shared via Instagram Stories, the Don't Worry Darling actress and director shows off her incredible figure. How does the mother-of-two maintain her forever-young figure? Read on for 7 of Olivia Wilde's top pieces of advice for staying in shape and the photos that prove they work.

According to Olivia "it's all about balance," when it comes to health and wellness. "I think anyone who's ever had even a small period of their life where they clean up their act — first begin to eat healthy food and exercise and use natural products — they'll always say … I feel my best. But sometimes it's hard to sustain that lifestyle. You know it's tricky for anybody to stay totally clean," she told CNBC Make It. 

"When you have an option to walk or take a car, walk if it's an option. I'll take the stairs," Olivia told CNBC about one of her health hacks. "There's often a way to [be active]. Rather than sitting at home and taking a call and doing a phone meeting, walk around. You could often incorporate activity into your life."

Olivia is a fan of Transcendental Meditation. "I'm not consistent enough…. I want to get better at that," she told CNBC. "When you meditate, you may clear away the information overload that builds up every day and contributes to your stress," says the Mayo Clinic. Benefits include:

• Gaining a new perspective on stressful situations
• Building skills to manage your stress
• Increasing self-awareness
• Focusing on the present
• Reducing negative emotions
• Increasing imagination and creativity
• Increasing patience and tolerance
• Lowering resting heart rate
• Lowering resting blood pressure
• Improving sleep quality

Olivia is a smoothie drinker "I've found it's a constant in my smoothies. I'll use banana, almond milk, almond butter, then some kind of green—maybe spinach or kale and blueberries. Sometimes I'll use cacao to make a yummy chocolatey thing that tastes more like a shake than a smoothie. People who do just straight green smoothies are too intense for me," she told Well + Good. 

"If I have time, I'll work out after the kids are off and settled. I'll work out in my house, or if I have time I'll go to a studio or a class—but I have less and less time to do that, so it's all about finding stolen moments," Olivia told Well + Good. "Now that I'm doing a play, in my dressing room if I have 20 minutes before a show, I know enough routines to do my own and squeeze it in when I can."

Olivia loves dance cardio, regularly hitting Tracy Anderson classes in New York and Los Angeles. "I love a good dance class. I like contemporary, I like hip-hop, I like ballet—yeah, I think dancing is the most fun kind of workout," Olivia told Byrdie. 

Olivia prioritizes hydration. "Get the water bottle that you actually like reaching for and you'll find yourself drinking way more," Olivia suggested about how to hydrate. "It's really funny because it's the Nalgene water bottle. The most simple, old-school one is the size that I find that I don't mind having with me everywhere. It's a step in the right direction. It's still, you know, made of plastic. So it's not the best thing in the world. I also have the titanium ones. But I've moved fully away from, you know, plastic, like the Fiji water bottles that I used to have everywhere."