The fitness freak and founder of Results With Lucy Instagrammed this snap of herself stretching in a ballet workout.
Once we got past the skin-tight hot pink and black leotard, we started thinking about all the other famous females who've taken to the barre recently, including Taylor Swift, Miranda Kerr and Natalie Portman.
Natalie got the buzz after all that hardcore training for her Oscar-winning role in Black Swan, while Miranda Kerr took up the fitness fad as an extension of her yoga regimen.
Doing an hour of 'good toes, naughty toes' might remind you of childhood dance lessons, but there's actually a very good reason why celebs are taking to the barre in adulthood.
Ballet fitness classes stretch your muscles, improve your posture and encourage flexibility, while activating your core muscles and encouraging a lean, toned stomach.
But seriously, we're not going anywhere near a leotard...or a tutu.
Fancy learning more or giving it a try? Here's what you need to know...
The best ballet book:When Natalie Portman was asked to convincingly play a ballet dancer in Black Swan, the star called on professional Mary Helen Bowers to teach her the ropes. Her book, Ballet Beautiful, is full of exercises that will make you feel long, lean and sculpted. Find out more and check out some example exercises from the book, here.
The best ballet fitness classes:Search for courses near you or try some of our tried-and-tested at-home DVD workouts to improve your posture, flexibility and strength at your own pace. Find our more here.
Give it a try at home with this 30 minute cardio ballet workout. Can you handle it?
Would you be willing to be back in a leotard in the name of fitness?
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