Miley Cyrus celebrated her 22nd birthday by going topless at her party at The Factory Club in West Hollywood on Nov. 23, and her hot new boyfriend, Patrick Schwarzenegger, 21, was there to watch it all go down. Unfortunately, his mom, Maria Shriver, has seen ALL the pictures and a source tells HollywoodLife.com EXCLUSIVELY that she’s so upset by the out-of-control party — she’s ready for a relationship intervention!

Miley has been trying hard to fit in with Patrick’s family. And things seemed to go well when she hung out with the fam at a screening for Maria’s new flick Still Alice. But a source tells HollywoodLife.com EXCLUSIVELY that Miley totally blew it with her birthday and she upset Maria.

“The birthday party with all the penis pictures disgusted her. That was the worst thing Miley could have done,” a source tells HollywoodLife.com EXCLUSIVELY.
“Maria is very, very worried about the influence Miley’s having on Patrick. She fully believes that you become who you surround yourself with and she’s always been so happy with the friends patrick chooses, she never saw this coming,” our source adds.

As much as she might want her son to dump Miley, there’s no doubt Maria’s going to have an uphill battle considering how long Patrick has been crushing on her.

“Miley has been his celebrity crush forever, so he is now living a dream come true. She is so cool and he loves hanging out with her. They have so much fun together,” a source tells HollywoodLife.com EXCLUSIVELY.