Paul McCartney's wife, Heather Mills McCartney, lost her leg in a fight with Jennifer Lopez's security guards at her New York office.

Mills, 37, was leading the People For The Ethical Treatment Of Animals (PETA) protests against the diva for using fur in her latest clothes collection, Sweetface, when she got into a fight with the security guards because she tried to enter into the building, accompanied by an entourage of journalists and photographers.

Mills lost the leg in the fray and, after she recovered it, she asked the bodyguards to let her go to the bathroom, so she could attach it back. But the guards refused her, yelling "You have no authority to be here. Get out! Leave the floor immediately!"

Photographer Richard Corkery tells 25hoursonline.com: "I saw her touch her knee and I could see she was in pain. She limped to the ladies room but it was locked. I found another door open. It led on to the stairwell. At least she could have a private moment, which is what she needed."

According to 25hoursonline.com, Lopez's guards continued to verbally attack the group - screaming: "Call the cops! Call the cops!" - until Mills McCartney recovered her composure and was able to leave the building.