Yeah, we REALLY believe that report that Maria Shriver is "happy" about her son Patrick Schwarzenegger dating Miley Cyrus!

The 21-year-old pop star is currently in Miami for Art Basel, and we're not sure what's more shocking -- the fact that Miley's t*ts are practically out or that she's lighting up onstage. Miley performed at the Raleigh Hotel for the V Magazine bash, and not only was she smoking onstage, but during her soundcheck she was also photographed lighting up what looked like a very large blunt. She can't stop and she won't stop!

When asked about the ridiculous art and Photoshop collaborations she posts on Instagram, Miley told V Mag recently, "I just sit around and smoke weed anyway, so I might as well sit around, smoke weed, and do something ... It was much weirder when I started doing it while I was sober." Well, despite People's story that Shriver isn't unhappy about Miley and Patrick, HollywoodLife doesn't agree.

"Maria is planning have a one-on-one with Patrick over the holidays because she wants to talk some sense into him," a source told the site. "This is putting a huge strain on the holidays for Maria, she’s so worried where this whole thing could lead Patrick. It’s got her very upset."

Whatever Maria's thoughts about Miley might be, these pics certainly aren't helping!

@waynecoyne5 #artbasel

A photo posted by Miley Cyrus (@mileycyrus) on