Electro-pop-hop group LMFAO have knocked Jennifer Lopez's 'On The Floor' from its number 1 position in the midweek chart update. 

The outfit's club banger, 'Party Rock Anthem', has moved up a place to steal the crown from JLo after 4 weeks in the chart and Katy Perry ft. Kanye West's 'E.T.' is also climbing up and sits firmly at number 3 this afternoon (April 13). 

There were also 2 new entries from the cast of 'Glee' this afternoon with their cover of Ke$ha's 'Tik Tok' at number 37 and 'Don't You Want Me' by The Human League at 40.

Watch the video for LMFAO's infectious 'Party Rock Anthem' here: