Justin Bieber celebrates 21st b'day guzzling bottles of champagne

Justin Bieber had a blast on his 21st birthday, as he was spotted drinking and popping the champagne at a private rented island.

The 'Baby' hitmaker posted a picture as a glimpse of his birthday bash where he was seen getting close to the model Yovanna Ventura, with whom the singer had been romantically rumored, TMZ.com reported.

The 21-year-old singer had his birthday bash at a private rented Caribbean isle near Grenada with close friends.