Justin Bieber Supports Chris Brown's Charity Roller Skating Event Before Shirtless Club Performance

Justin Bieber stepped out for buddy Chris Brown's Charity Rollerskating party in Los Angeles Saturday night after playing at BET Experience's Sprite celebrity basketball game. Bieber later sang at the Playhouse nightclub.

Justin Bieber's Friday night was a washout he said himself, but on Saturday it looks like he made sure he went to every party in town.

The 20-year-old singer joined pal and upcoming duet collaborator Chris Brown at the First Annual Roller Skate Jam at the Moonlight Rollerway Skating Rink in Glendale, California.

The night raised funds for Breezy's Symphonic Love Charity which "supports and creates arts programs for youth (sic.)"

(Photo: Chris Brown makes a face while skating.)

Chris Brown

(Photo: Bieber gets his skate on at the roller rink.)

Justin Bieber

(Photo: Bieber leaving the Moonlight Rink with pals.)

Justin Bieber

Before music's most polarizing pair hit the roller rink, they played at BET Experience's Sprite Celebrity Basketball Game at L.A. Live.

In addition to Bieber and Brown, it was attended by a raft of stars including champion boxer Floyd Mayweather, Snoop Dogg, The Game, Soulja Boy, Terrell Owen and many more.

Justin dressed casually for the skating soiree, sporting jeans, a blue jersey, black Fedora, sunglasses and white slip-ons.

Following the charity event, the Canadian and his crew swung by the Playhouse nightclub in Hollywood where Bieber performed "All That Matters," a cut off his 2013 Journals album.

Naturally, he was shirtless.

(Video via Instagram.)

Earlier this month, Bieber and Brown let the world know they have collaborated on another duet. Their previous effort "Next To You" was back in 2011.

Justin announced the news with an Instagram photo of the pair in a recording studio.

It was captioned: "Studio, me and CB did 1 for the fans."

As well being friends years and connecting over music, the two artists both have ongoing legal challenges.

Brown was released from jail on June 2 after serving 108 days for breaching his Rihanna-assault probation with a new assault charge, for which a Washington D.C. trial is pending. There were also rumors of abuse suffered in jail by the singer.

For Bieber, having avoided a trial in his Miami DUI with an in-progress plea deal, he is now waiting to see if he will be charged with felony or misdemeanor vandalism for his alleged role in egging a house.

But, this past weekend was forgetting about the heavy stuff and having fun.

Brown performed at Sunday's BET awards in a surprise comeback spot performing "Loyal," before releasing a new single shortly after the show --- which he was reportedly carried out of.

The R&B midtempo is called "New Flame" and features Bieber's mentor Usher and rapper Rick Ross.

Taking to Twitter very late Sunday, Justin wrote:

[Images via Instagram/Just Jared/RA/Pacific Coast News.]