Justin Bieber Shows Off Bulge In New Underwear Selfie To Promote 'Dave'

Justin Bieber is helping promote his pal Lil Dicky‘s new show Dave!

The 26-year-old singer shared a new selfie on social media, wearing nothing but his underwear.

“#DAVE premieres tonight on @fxxnetwork so I’m wearing my Dave underwear. @lildickygram @daveonfxx 😂. Watching tonight,” Justin captioned the photo on his page.

Dave stars Justin‘s pal Lil Dicky and follows “a neurotic mid 20′s suburbanite’s convinced he’s destined to be one of the greatest rappers of all time. Now he’s got to prove it to everyone else. Yawn.”

Justin‘s longtime manager Scooter Braun is also an executive producer on the series.

Click inside to see the FULL photo from his Instagram story…