Paris Hilton's snap-happy romance with Doug Reinhardt came to a very messy end, according to multiple reports.

The heiress reportedly lost her cool when she arrived at Los Angeles club Darkroom earlier this week to find her boyfriend talking to a scantily-clad blonde.

"Paris decided to drop by while Doug was on a boy's night out, but when she got there, she found him looking very cosy with a half-naked blonde girl," an onlooker tells E!Online.

"Paris turned into a raving lunatic. She threw a handful of limes at the girl, before shoving her up against a wall. She then started scratching and hitting Doug.

"He called her a 'f***ing crazy b***h' and she stopped. Doug's friend hightailed it out of there and Paris and Doug left together a short time later."

The New York Post has identified the blonde in the fruity firing line as Kendhal Beal, a Texas beauty queen and rumoured on/off girlfriend of Doug's pal Brody Jenner.

Her rep told Page Six: "Paris was picking up ice and fruit and throwing it at Kendhal - she was the victim. Kendhal did nothing offensive or aggressive. Paris was throwing accusations, calling her names. It was the same thing you always hear about Paris and her tirades."

Meanwhile, Paris' rep insists that "the events of this night are being greatly exaggerated."

Paris appeared to have recovered from the ordeal a few night later when she was snapped enjoying the company of soccer star Cristiano Ronaldo in another Los Angeles club.