Music
Rex Features
The American pop singer, real name Alecia Moore, previously reached number one with 'Just Like A Pill' in 2002 and the all-star rendition of 'Lady Marmalade' in 2001.
Last week's number one, 'Sex On Fire' by Kings Of Leon, slips to two after three weeks on top.
Meanwhile, Oasis notch up their 22nd top ten hit, debuting at three with 'The Shock Of The Lightning'.
Sugababes climb from eight to four with 'Girls', while reformed boyband Boyzone debut at five with 'Love You Anyway', their first single since 1999.
The top ten singles in full (click where possible for our reviews):
1. (38) Pink: 'So What'
2. (1) Kings of Leon: 'Sex On Fire'
3. (-) Oasis: 'The Shock Of The Lightning'
4. (8) Sugababes: 'Girls'
5. (-) Boyzone: 'Love You Anyway'
6. (3) Rihanna: 'Disturbia'
7. (2) Katy Perry: 'I Kissed A Girl'
8. (4) Pussycat Dolls: 'When I Grow Up'
9. (5) Iglu & Hartly: 'In This City'
10. (6) Gym Class Heroes ft. The Dream: 'Cookie Jar'
Source: Official Chart Company
> Click here for this week's UK albums chart
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