Paris Hilton Warns Lilo To 'Watch Your Back'

MIAMI BEACH (CBSMiami/TMZ) – Socialite celeb Paris Hilton has a warning for Lindsay Lohan – watch your back.

This after Lilo, 24, allegedly ordered a guy to beat up Hilton's brother, according to TMZ.com.

Lohan, visiting South Florida for Art Basel, allegedly ordered the attack after Barron Hilton reportedly bad mouthed her at a party at a Miami Beach mansion where she was staying while in town, according to the celebrity news website.

Hilton, 24, told police that he got into a heated argument with an unknown male at the party.  Hilton said the male him in the face with an 'unknown object', according the the police incident report.  Two witnesses at the party said the fight began when the unknown male asked Hilton to leave the party.

On Saturday, Hilton posted a picture of his battered face on Instagram on Saturday.

When Paris saw the picture she posted online, "They both will pay for what they did. No one f***s with my family and gets away with it!!"

Lohan and her father have denied she had anything to do with the attack and had left the party before it happened. Michael Lohan claims they have several witnesses who will back up their story, according to TMZ.com.

A video obtained by TMZ.com, however, seems to contradict that. It shows Lohan sitting in an SUV being confronted Hilton right after the attack. On the video, Lohan can be heard saying she saw nothing and taunting Hilton who claims she was harassing him.

According to TMZ, Barron told the police he didn't know the name of the guy who attacked him but he was sure that Lohan was behind it.

The celebrity news website TMZ.com contributed to this report.