Music
The Pussycat Dolls held on to second with 'When I Grow Up', while Metro Station climbed to third with 'Shake It'.
Elsewhere, Kid Rock entered the top ten at eight with 'All Summer Long' and Lady GaGa climbed seven spots to tenth.
The top ten in full:
1. (1) Katy Perry: 'I Kissed A Girl'
2. (2) The Pussycat Dolls: 'When I Grow Up'
3. (5) Metro Station: 'Shake It'
4. (4) Sam Sparro: 'Black & Gold'
5. (3) Jordin Sparks and Chris Brown: 'No Air'
6. (6) Miley Cyrus: 'See You Again'
7. (7) Chris Brown: 'Forever'
8. (21) Kid Rock: 'All Summer Long'
9. (8) Rihanna: 'Take A Bow'
10. (17) Lady GaGa: 'Just Dance'
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