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Bar Refaeli has revealed on twitter that she has broken her arm.

The supermodel - who is the ex-girlfriend of Leonardo DiCaprio - has been left with the nasty injury after an unknown accident and she is not happy about it.

She wrote on her twitter page: "I broke my arm. And I'm annoyed! Booooooo. (sic)"

No other details about how she got the injury are known yet.

Bar's followers on the micro-blogging website were quick to send her get well soon messages.

User AzulinR tweeted: "Oh yikes!! Sorry to hear that, yaldonet! Hope it heals very very quickly!! (sic)"

One cheeky fan even offered to help the stunning Sports Illustrated swimsuit model get dressed while she is incapacitated.

Her follower AustinMichael wrote: "If you need some help putting your bikini on, let me know ... lol. (sic)"

Bar and Leonardo separated in May after being in a relationship on and off for over five years.

They decided to call time on the romance because they had "grown apart" and were both focused on their careers.

Since the break-up, the 36-year-old actor has started dating 'Gossip Girl' star Blake Lively, 23.

Bar, 26, has not been romantically linked with anyone since the relationship ended.