The 27-year-old singer has reportedly hired a private instructor to teach her how to dance in her North London house in a bid to get healthy.
A source said: "Amy has started ballet lessons at home and she's really enjoying them. She wants to get fit, tone up and become more supple without getting too muscly.
"She really likes kick-boxing too, but she loves the glamour of ballet."
The 'Rehab' singer ' who has previously battled drug addiction - has vowed to get in shape before going back on stage and has installed a studio and fitness equipment into her new home.
The insider added to The Sun newspaper: "When she moved in she swore she was going to change her lifestyle - that's part of the reason she had her own gym and studio installed.
"She wants to be fit and look good ready for her comeback at the end of the year."
Ballet isn't the only pastime Amy has been seeking professional guidance in.
Last year, it was revealed the troubled singer had taken up golf in a bid to keep herself away from the London party scene.
A source said at the time: "She played nine holes and loved it, she had a natural swing. Amy wants to learn how to play properly now."
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