While Paris Hilton has managed to stray clear of any negative publicity of late, her Simple Life co-star and buddy, Nicole Richie, is not doing as well.

Nicole had to be escorted out of the Hard Rock Hotel by security as she was allegedly involved in an altercation with another female while standing in line. The incident took place early on Sunday morning, around 1 a.m.

Apparently Nicole got so wild that security had to be called in to take her off Hotel property. She was partying there along with her boyfriend, the rest of Good Charlotte and Carey Hart.

Update:

Nicole’s rep was quick in giving out a statement: “She was in Vegas but there wasn’t an altercation of any kind involving her.”

If you want to read more on Nicole’s antics:

Nicole Richie Tossed from the Hard Rock - TMZ

Bad Richie - Dlisted

Paris Hilton just could not stay away from her boyfriend on the Fourth of July.

The hotel heiress made a surprise appearance on Friday at WWFT-FM’s Star Jam Concert. She preferred to stay backstage during the show and was seen capturing her boyfriend Benji Madden, lead guitarist of the band Good Charlotte, on video.

The band performed at the Star Jam concert in front of a sixty thousand-strong audience.

Dress Watch: Hilton was sporting black short-shorts, a white T-shirt, a black hat adorned with a belt buckle and oversized sunglasses trimmed in white.