Meghan Markle's close friend's Pilates studio attacked by vandals

Meghan's friend, Heather Dorak, owns Pilates Platinum, and on Friday, she took to Instagram to share that her studio has been the target of an attack.

In an upsetting clip, Dorak walked around her studio, showing the floor-to-ceiling glass window had been smashed.

"Thankfully everyone is safe but these moments are so challenging for a business owner," Dorak wrote.

Of the vandal, she continued: "This person is just going from business to business throwing rocks through storefronts."

Meghan may have reached out to offer her support to Dorak, as the pair have been close since 2006.

They celebrated July 4 celebrations together as well as hitting the slopes on a ski holiday earlier this year.

The pair have also been photographed hiking in the California Hills.

Pilates Platinum is likely what brought Meghan and Dorak together, as they met in her studio.

The studio features a Megaformer Pilates machine, which has a moving platform and springs for resistance.

Speaking about Megaformer Pilates, the Duchess of Sussex previously said: "[It's] hands down the best thing you could do for your body.

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"Your body changes immediately…give it two classes and you will see a difference."

Dorak owns six Platinum Pilates studios, two in Texas and four in California.

The studios have a humble exterior and are not flashy or flamboyant.

The website states that wearing jewellery is "not a good idea", while another rule states: "No strong perfumes as some students are allergic."