Kelly Osbourne, Miley Cyrus, and More Stars Who Unabashedly Despise Other Celebrities

Kelly Osbourne despises Giuliana Rancic.

The 30-year-old does not have nice things to say about her former Fashion Police co-host.

“I will never admit to liking Giuliana because I don’t. I don’t think she’s a good person and I think she’s a liar," Kelly recently said.

Miley Cyrus does not have nice things to say about Taylor Swift.

The 22-year-old tore apart Taylor's "Bad Blood" music video.

“I don’t get the violence revenge thing. That’s supposed to be a good example? And I’m a bad role model because I’m running around with my [boobs] out? I’m not sure how [bobs] are worse than guns," she said.

Chelsea Handler hates Angelina Jolie.

The 40-year-old has been very vocal about her disdain toward Angelina.

“She seems like a demon,” Chelsea once told Andy Cohen. “It has nothing to do with Jennifer [Aniston]. As a woman, I know when you see somebody walking across the room that’s a bad girl. I just don’t like Angelina Jolie. I don’t think she’s a girl’s girl. I like girl’s girls!”

Seth Rogen does not like Justin Bieber, not even a little bit.

Not only did the 33-year-old diss the pop star in a tweet, but he even went on a rant about him on Watch What Happens Live.

"In my opinion, Justin Bieber is a piece of s–t," he said.. "He seems like he's obnoxious and ungrateful, insincere, and he puts people's lives at danger and overall he acts like a piece of s–t."

Jon Hamm resents Kim Kardashian.

The 44-year-old doesn't care for the Keeping Up with the Kardashians reality star at all.

"Being a f—ing idiot is a valuable commodity in this culture because you’re rewarded significantly. … It’s celebrated. It doesn’t make sense to me," he said about her.

After Kim called his statement "careless," he responded saying, "I don’t think it was careless. I think it was accurate."

Elton John has dissed Madonna more times than you can count.

Here are just a few of his quotes about Madonna:

"Why is she such a nightmare? Her career is over, I can tell you that. Her tour has been a disaster and it couldn't happen to a bigger c—."

"Madonna hasn't got a f—ing chance [at winning a golden globe]."

"She looks like a fairground stripper."

Ouch.

Maci Bookout can't stand Farrah Abraham.

The 24-year-old nearly quit working on Teen Mom when she found out they were letting Farrah back on the show!

"I'm not going to lie and say I was happy about [Farrah's return]," she said.

Sophia Bush loathes her ex-husband Chad Michael Murray.

The 33-year-old opened up about their relationship and clearly doesn't have pleasant thoughts about him.

"My mother once said to me that if you don't have anything nice to say, not to say anything at all," she said when asked about him. "We were two stupid kids who had no business being in a relationship in the first place."

"At the end of the day, we're grownups, and I actually think it's interesting that when people split in a way that's unpleasant, they usually just go on quite literally hating each other—or the person in my situation hates the other person, whatever—but when you have to work with somebody for another half a decade, you kind of have to deal with it."