Justin Bieber "can't stop smiling" following his winning sweep at the 2010 American Music Awards (AMAs), which saw him triumph over Eminem, Katy Perry and Lady Gaga to land the Artist of the Year honour.

The 16-year-old pop sensation became the youngest ever recipient of the prestigious accolade at Sunday's (21Nov10) ceremony and he also scooped prizes for Favourite Album, Pop or Rock for My World 2.0 and Favourite Male Artist, Pop or Rock, as well as the Breakthrough Artist title.

Bieber was delighted with his wins and he took to his page shortly after the bash to thank his fans for their support.

In a series of posts, he gushes, "I love my fans! We are partyin tonight (sic)! Holy c**p! What is going on!? I love EVERYONE! I can't stop smiling! We did it! Never say never!"