Katy Perry lands Australian No.1

US singer Katy Perry has bagged the Australian number one spot with her single 'I Kissed A Girl'.

American Idol winner Jordin Sparks falls to second after a month at number one with her Chris Brown duet 'No Air'.

Elsewhere, Coldplay's 'Viva La Vida' moved up to fifth, while Ne-Yo entered the top ten with his latest release 'Closer'.

The top ten in full:

1. (2) Katy Perry: 'I Kissed A Girl'
2. (1) Jordin Sparks and Chris Brown: 'No Air'
3. (3) The Pussycat Dolls: 'When I Grow Up'
4. (4) Rihanna: 'Take A Bow'
5. (6) Coldplay: 'Viva La Vida'
6. (5) Sara Bareilles: 'Love Song'
7. (7) Estelle ft. Kanye West: 'American Boy'
8. (8) Miley Cyrus: 'See You Again'
9. (10) Chris Brown: 'Forever'
10. (17) Ne-Yo: 'Closer'