Mischa Barton proved she’s a perfect 10 with her latest bikini-clad Instagram snap.

Posing in a tiny, white two-piece, the 30-year-old actress showed off her killer curves on Sunday, July 31, making it clear she’s working hard to keep her Dancing With the Stars body in shape.

“Rocking my girl @valemicchetti’s hat. Sunny Cali,” she captioned the photo.

But it was her toned body, not her hat, that stole the show, leaving fans commenting about how “amazing,” “healthy” and “stunning” she looked.

Barton has struggled with her weight as well as her mental health in the past. She suffered a full-blown breakdown in 2009 and ended up in Cedars-Sinai Medical Center's psychiatric ward after she tried to commit suicide.

When she gained weight in a bid to get healthy, after she was released, she was criticized and bullied for her fuller figure.

“It was always, ‘She’s too skinny, she must be sick,’” Barton said of when she first shot to stardom in The O.C. “Then it was, ‘She’s too big.’ I was never the right weight.”

Since her stint on DWTS earlier this year, though, Barton is clearly trying to look after herself.

She was even happy to post a racy, topless photo of herself on a balcony during her recent Greek Island vacation.

The snap was just one of many taken during the sun-filled Mykonos getaway, which she chronicled for her fans on social media.

Thank You!

You have successfully subscribed.

ncG1vNJzZmivp6x7tr%2FMmp6aspmjsm%2BvzqZmnqakmr%2B1rcinpJ6mpGS7psPSaKSiq5Odrm6uwKurqKZdm7miwc2tqmaamaC2r7WMm6adsV2ku261zayrmp%2Bilrpuw5NsaHJoYmQ%3D