Jennifer Lopez's hit 'On The Floor' has been the most-watched music video of 2011 on YouTube, the website has revealed.
The 42-year-old's hit song, which features a rap from Pitbull, has accumulated over 454 million views since being uploaded on March 3.
With 326 million views, LMFAO's summer smash 'Party Rock Anthem' featuring Lauren Bennett and GoonRock takes second place.
The only British artist in the Top 10 is newcomer Jessie J, whose 'Price Tag' clip amassed 170 million views to come seventh.
As well as with Lopez, Pitbull is listed twice more in his own right, with Katy Perry and LMFAO also popping up with two separate videos.
The Top 10 in full:
1. Jennifer Lopez - 'On The Floor' ft. Pitbull
2. LMFAO - 'Party Rock Anthem' ft. Lauren Bennett, GoonRock
3. Bruno Mars - 'The Lazy Song'
4. Nicki Minaj - 'Super Bass'
5. Pitbull - 'Give Me Everything' ft. Ne-Yo, Afrojack, Nayer
6. Pitbull - 'Rain Over Me ft. Marc Anthony
7. Jessie J - 'Price Tag' ft. B.o.B.
8. LMFAO - 'Sexy and I Know It'
9. Katy Perry - 'E.T.' ft. Kanye West
10. Katy Perry - 'Last Friday Night (T.G.I.F.)'
J-Lo performs in Vegas




























