LMFAO Joined By David Hasselhoff On Stage At American Music Awards 2011

21 November 2011, 14:35 | Updated: 21 November 2011, 14:37

The 'Sexy and I Know It' duo had David Hasselhoff join them for their performance at this weekend's awards ceremony.

LMFAO invited a special guest on stage during their closing performance at the American Music Awards 2011 last night (20th November) when former Baywatch star David Hasselhoff joined them for a dance.

The Britain’s Got Talent judge appearing during the conclusion of LMFAO’s mash-up set of ‘Party Rock Anthem’ and ‘Sexy and I Know It’ to the shock of the Nokia Theatre crowd in Los Angeles.

The Hoff was escorted on stage towards the end of the performance and stripped down to reveal tight boxer shorts with a smiley face on the front and the words ‘don’t judge me” written the back.

Earlier on in the duo’s set Justin Bieber appeared on stage wearing yellow tiger print trousers and danced while LMFAO chanted “Go Bieber!”

View our American Music Awards 2011 gallery here.

Watch David Hasselhoff’s surprise appearance at the American Music Awards 2011 below: