TMZ has reportedly obtained photos of a completely nude Bieber, strumming away on his big wooden instrument at his grandmother's home in Toronto during Thanksgiving in November 2012.
The 19-year old singer apparently knocked on his grandma's door completely naked mumbling lyrics like, 'I love you grandma, how are you, hello grandma'.
Sources reveal that the relatives present at his grandmother's house, found his nudity very endearing comparing him to some kind of a human Bart Simpson.
Recently, the 'Boyfriend' singer narrowly avoided an embarrassing wardrobe malfunction when his trousers were on the verge of falling during a concert in Jacksonville, Florida.
--ANI (Posted on 13-08-2013)