The `Piranha 3-D` actress split from her England rugby player boyfriend Danny Cipriani earlier this month, and it has now been claimed the hunky sportsman decided to end the 22-month romance because of Kelly-s annoying habits.
The 30-year-old beauty is alleged to have constantly telephoned Danny, 22, when they were apart and would take up to three hours to get ready when they were due to go out.
A source told Reveal magazine: "She used to ring him up to eight times a day but Danny didn`t have anything to say after the third call. Once she even rang him to say she couldn`t find her earrings.
"And when they did go out, she would take up to three hours to get ready, this would infuriate him."
Kelly is believed to have been stunned when Danny told her it was over, even though she felt the relationship had probably run its course.
The source added: "Kelly knew it was coming but it was still a shock to her, she is unlikely to have ever been the one dumped before. They made a great couple but as time wore on they couldn`t handle each other`s traits."
Kelly is currently trying to forget about the separation with a holiday to the Caribbean with large group of friends.
She has been pictured enjoying the sun and has been jet skiing with 16-year-old Sam Watson, a family friend and son of multi-millionaire businessman Eric Watson, who Kelly knows well.