The 28-year-old "Furious 7" actress bumped into the "What Do You Mean" hitmaker in France earlier this year and said Bieber refused to take a photograph with her younger sister Julie, reported Female First.
"Justin Bieber was actually really rude to my little sister at the Cannes Film Festival... He was taking some pictures with some ladies and she suddenly got really excited and was like, 'Do you think he'd want to take a picture with me?' I was like, 'Sure Julie... Everyone's taking pictures today... Look at him, he's a sweetheart.'
Rousey said the meeting left her feeling disheartened and said she is not a "Belieber" anymore.
"Julie looks at me and she's on the verge of tears and she goes, 'I'm no longer a Belieber.' Yeah I don't think I'd want to hang out with him. I'm not a Belieber. I was, but I'm not anymore.