Music
Rex Features
Her single 'I Kissed A Girl' is also expected to top the British charts on Sunday.
Chris Brown climbs to second with 'Forever', while Rihanna takes third and fourth positions with 'Disturbia' and 'Take A Bow' respectively.
The highest new entry of the week comes from pop trio the Jonas Brothers, who debut at eight with 'Tonight'.
Meanwhile, British rapper Estelle continues to make good progress on the Billboard Hot 100, climbing to 12 with her Kanye West collaboration 'American Boy'.
The top ten in full (click where possible for our reviews):
1. (1) Katy Perry: 'I Kissed A Girl'
2. (3) Chris Brown: 'Forever'
3. (4) Rihanna: 'Disturbia'
4. (2) Rihanna: 'Take A Bow'
5. (5) Coldplay: 'Viva La Vida'
6. (6) Lil Wayne: 'A Milli'
7. (8) Kardinal Offishall ft. Akon: 'Dangerous'
8. (-) Jonas Brothers: 'Tonight'
9. (12) Pussycat Dolls: 'When I Grow Up'
10. (14) Ne-Yo: 'Closer'
Related Stories
Singles Reviews
Nelly Furtado: 'Big Hoops' reviewThe singer's comeback confidently ignores all the latest fads.
Music Interviews
David Guetta: My music isn't all the sameDigital Spy talks to the DJ ahead of his London shows this weekend.
The Sound
Playlist: Queen's Diamond Jubilee specialWe select our favourite Queen-related songs ahead of the Diamond Jubilee.
Album Reviews
Ladyhawke: 'Anxiety' reviewThe singer's ear for infectious pop remains stronger than ever on her second LP.
