Miley Cyrus Flaunts Justin Bieber 'Reefer Fever' Shirt PHOTO on Twitter: 'Bangerz' Twerker Approves of Selena Gomez's Ex Smoking Weed

Most fans already know that both Miley Cyrus and Justin Bieber are big fans of Mary Jane (aka, marijuana). But did fans know that the infamous "Wrecking Ball" twerker is an avid supporter of the Biebs' "reefer fever?" Check out this viral photo 20-year-old Cyrus recently posted on Twitter:

@MileyCyrus: "@justinbieber FO LIFE ♥ ♥ ♥" (Monday, Oct. 7).

So, how many Beliebers plan on purchasing a "Reefer Fever" t-shirt similiar to Cyrus'?

Just last month, Cyrus admitted that she thought weed was the "best drug on earth." She also gave this advice for Selena Gomez's pop star ex in an exclusive interview with Rolling Stone:

"[We hang out a] little bit, but not really... I'm not much older than him, so I never want it to feel like I'm mentoring him. But I do mentor him in a way. Because I've been doing this sh*t for a long time, and I already transitioned, and I don't think he's quite done it yet. He's trying really hard. People don't take him seriously, but he really can play the drums, he really can play guitar, he really can sing. I just don't want to see him f*ck that up, to where people think he's Vanilla Ice. I tell him that. Like, 'You don't want to become a joke. When you go out, don't start sh*t. Don't come in shirtless.' But the thing is, I think boys are, like, seven years behind. So in his head, he's really, like, 12."

Hmm... well one thing Cyrus DOES approve of is Bieber getting high!

Cyrus' new album Bangerz was just released on Oct. 4.