The American singer sold enough copies to prevent a late challenge from The Noisettes, whose new song 'Don't Upset The Rhythm' entered at number two.

The rest of the top-five was completed by Flo Rida's 'Right Round' at number three, 'Halo' by Beyonce at number four and The Pussycat Dolls at five.

The number one on the album chart also remained unchanged, with Ronan Keating's 'Songs For My Mother' securing a second week at the top.

Kings Of Leon are at number two with 'Because Of The Times', Lady GaGa's 'The Fame' is at three and The Pet Shop Boys are a new entry at four with 'Yes'.

(by Jason Gregory)