Kim Kardashian on Twitter

The 29-year-old reality TV queen was said to have ended her relationship with American football star Bush after stories emerged alleging he cheated on her with a blonde waitress.

While Kim has so far refused to comment on split reports, the curvy star posted a photograph of herself blowing a kiss at the camera and reclining in a white bikini on the social networking site, suggesting she is now a single woman.

 The socialite, who, along with sisters Khloe and Kourtney, stars in U.S. reality show Keeping Up With The Kardashians, looked happy and relaxed in the personal shots.

Kim and Bush were said to have split after a story emerged suggesting the sportsman had an affair with waitress January Gessert while in a relationship with Kim.

But Bush quickly took to his Twitter page to deny the rumours, insisting: 'January is a long time friend of mine & has been dating my best friend for 6 months. Sorry! Lol!'

He later wrote: 'ALL THE LADIES, STEP RIGHT UP! If you would like to be the next person linked to dating Reggie Bush all you gotta do is stand next to him!!!'

Meanwhile, Kim was also quick to deny she had started seeing Manchester City defender Wayne Bridge after a story emerged earlier this week.

Posting a picture on the front page of the newspaper who wrote the story, Kim tweeted: 'Who the hell is Wayne Bridge? LOL Someone please fill me in because I have no clue!'

But while neither Kim nor Bush are commenting on the claims, Kim's close friend Adrienne Bailon, who formerly dated the star's brother Rob Kardashian, thinks Kim will be fine.

She told Us magazine: 'Kim is going to be fine either way.'

Kim is currently is in Miami with her sisters while they shoot their spin off series Khloe and Kourtney Take Miami.

And the star is clearly enjoying her time in the Florida city. As well as sunbathing and relaxing on yachts, Kim has also been going out with her sisters and friends and making the most of the city's nightlife.