Photo: WENN.com
It takes a brave woman to take on an Osbourne, but two? Our hats are off to Lady Gaga. The 'Bad Romance' star has clashed publicly and unpleasantly with both Sharon and Kelly Osbourne at the beginning of 2013.
The feud began when Kelly Osbourne claimed that Lady Gaga's dedicated fanbase, her 'Little Monsters' had suggested she 'kill herself' due to her weight problems.
"Lady Gaga's fans are the worst," she told Fabulous magazine. "They've said I should kill myself, that they hope I get raped. I mean it's crazy, but I've had this all my life and I just try and ignore it."
Gaga responded in an open letter written on her Little Monsters website, with Gaga writing: "To see you blossoming into a beautiful slender woman who makes fun of others for a living is astounding. Why not help others? Why not defend others who are bullied for their image and share your story?"
The feud has since progressed - and shows no signs of slowing. So, as claws are unsheathed, hair is pulled and tongues lash, check out some of the best female feuds of all time...