Katy Perry makes it a month at US No.1

Katy Perry has topped the US singles chart for a fourth consecutive week with 'I Kissed A Girl'.

The 24-year-old pop singer, who hails from Santa Barbara, California, continues to fend off challenges from Rihanna, who remains at two with 'Take A Bow', and rapper Lil Wayne, who sticks at three with 'Lollipop'.

Another Lil Wayne single, 'A Milli', climbs from eleven to eight this week to become the only new track in the top ten.

Elsewhere, Estelle and Kanye West's 'American Boy', which topped the UK singles chart earlier this year, climbs to a new peak of 31.

The top ten singles in full (click where possible for our reviews):

1. (1) Katy Perry: 'I Kissed A Girl'
2. (2) Rihanna: 'Take A Bow'
3. (3) Lil Wayne ft. Static Major: 'Lollipop'
4. (6) Chris Brown: 'Forever'
5. (5) Leona Lewis: 'Bleeding Love'
6. (7) Natasha Bedingfield: 'Pocketful Of Sunshine'
7. (5) Coldplay: 'Viva La Vida'
8. (11) Lil Wayne: 'A Milli'
9. (10) Miley Cyrus: '7 Things'
10. (9) Plies ft. Ne-Yo: 'Bust It Baby Part 2'