After she shared a picture of herself while she was at the dentist, Bar Refaeli is back in posting teasing photos of herself.

The Israeli model posted a provocative photo of herself topless. It was a black and white shot from behind that showed her cheeky bottom. Although some are judging her for her extreme Twitter vanity, the rest of her audience were reminded why she is one of the most in-demand bikini models. With a body like hers, there's enough reason to parade it.

On Monday, she shared the photo with her followers with a caption that says, "Watch your back!" It wasn't the first time that Bar exposed her sexy side on the social networking site. A couple of weeks ago, she posted a series of bikini clad pictures while she was on vacation in her hometown in Israel.

The 27-year-old stunner recently appeared in a Spanish Glamour magazine photoshoot. Most frequently, she updates her fans by posting random snaps of her famous jet-setting life.

Bar was spotted a week ago in Berlin with her father Rafi. The father and daughter were at upscale store Emporio Armani to do some shopping.

Just last month, the former Germany's Next Top Model judge started her very own model casting show, "Million Dollar Shooting Star" on a German TV channel.

It looks like Bar has been doing so well since her split from A-list actor boyfriend Leonardo Di Caprio. The two were together for six long years after calling it quits. Bar used to date Olympic gold medalist Shaun White last summer and Israeli business man David Fisher, last year.

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