We roundup some of the most famous celeb slams ever!

When you’re young, famous, rich and beautiful in Hollywood—there’s bound to be some serious competition! Let’s check out these famous feuds...

Miley Cyrus and Taylor Momsen

17 says: What happens when Gossip Girl actress and The Pretty Reckless frontwoman Taylor Momsen brands Disney star Miley Cyrus as a “Disney bubblegum s**t”?!? Why, the start of a teenage celeb feud of course! In response, a source then mentioned "Miley is furious." He added:"She thought Taylor was pretty cool until this happened, which has left her totally confused. Taylor is so obviously desperate for fame. I mean, she's traipsing around town in her underwear, or is that for the love of the music too?" Ahem!

Lauren Conrad and Heidi Montag

17 says: 17 says: Now here’s a long-standing and well documented feud. Lauren Conrad and Heidi Montag, of the reality show The Hills fell out because of a boy—which of course is nothing new or surprising to us! When Heidi started dating Spencer Pratt and Lauren did not approve of it, they started arguing. Then, rumours went around that Lauren had made a sex tape with her ex-boyfriend—she obviously blamed Heidi and Spencer for starting the rumour. The girls are still not on talking terms!

Paris Hilton and Nicole Richie

17 says: These two were best friends for years until a sex tape called it quits on their friendship. Yes, all because of a SEX TAPE! In late 2005, Paris accused Nicole of screening her ‘secret’ sex tape—when Nicole hosted an SNL viewing but accidentally aired Paris’ scandalous sex tape instead. Paris revealed the two were no longer BFFs with an official statement: "It's no big secret that Nicole and I are no longer friends. Nicole knows what she did, and that's all I'm ever going to say about it."

Pictures from Stockexchange, moono.com & celebritywonder.com