The immaculate dresser spent Friday night at celeb hot spot The Chiltern Firehouse and arrived looking stunning.
Rosie dared to bare in a black backless top, which was just a little bit naughty but very, very nice!
She teamed the risqué halterneck with leather trousers which showed off her slender frame, and some towering kick ass heels.
The gorgeous redhead, who shot to fame on the BAFTA-award winning E4 reality show, took to Instagram before heading out to post a sexy selfie.
She wrote: "Going backless tonight.. This could end in tears!"
In this series of MIC, fans saw Rosie being wooed by New Yorker Jules only to discover that he had a girlfriend and describes himself as "polyamorous".
On hearing the news, she blasted: "I just want to know why you failed to tell me that you have three girlfriends? I would chop your d*ck off if I had kissed you or even liked you...and you kind of make me feel sick."
She added: "You can do what you like in your personal life and private life, that's your issue, just do not involve me in your slutty board game unless you're truthful from the word go."
You tell him, Rosie - you deserve better!
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