MTV.com News — As the pop star turns 18, we look back at some of his most heart melting, hysterical and adorable moments. By Christina Garibaldi more info

TMZ — Dr. James Naismith is rolling over in his grave ... because the beloved sport he invented was desecrated in Miami yesterday when Justin Bieber and Austin Mahone put aside their Selena Gomez beef and played pick up basketball ... in LEATHER… more info

MTV.co.uk News — Teenage girls across the globe will be pleased to hear that the two pop princes have collaborated on a new track... more info

ContactMusic — Two of the music industries young rising stars have teased a collaboration.Justin Bieber and Austin Mahone may have some new music in store for their... more info

ContactMusic — Singers Justin Bieber and Austin Mahone are preparing a real pop treat for their fans after hitting the studio together on Tuesday (01Apr14).The Baby... more info

MTV.com News — A source tells MTV News that Justin and Austin did in fact work on a 'really perfect' song. By Christina Garibaldi more info

MTV.com News — A new studio snap has us drooling for promised music. By Emilee Lindner more info

MTV.com News — Justin Bieber and Austin Mahone share snaps from the studio while Miley mourns the loss of one of her pups. By India Nicholas more info

MTV.com News — Check out Austin Mahone and Mark Wahlberg get slimed over and over. By Janelle Myers more info

MTV.com News — At Nickelodeon's show, Pharrell rocked a SpongeBob onesie, Austin Mahone wore a slime-green suit and more celebs cleaned up for the annual orange carpet. By Kelci Shipley more info