Guy Sebastian reclaims Aussie top spot

Guy Sebastian has reclaimed the top spot on the ARIA singles chart with 'Who's That Girl'.

The track, which marked the Australian Idol winner's fifth chart topper, climbs back from two to one after being toppled by Bruno Mars's 'Grenade' last week.

Elsewhere in the top ten, Enrique Iglesias lands at three with 'Tonight (I'm Lovin' You)', while Wynter Gordon vaults 14 to five with 'Dirty Talk'.

Notable gains elsewhere include Alexis Jordan, whose track 'Happiness' leaps from 24 to 13, Justice Crew's 'Friday To Sunday', which advances from 31 to 18, and Martin Solveig's 'Hello' featuring Dragonette, jumping from 39 to 29.

The Lonely Island and Akon's 'I Just Had Sex' debuts at 36, while Adam Lambert's 'If I Had You' re-enters the chart at number 50.

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

1. (2) Guy Sebastian ft. Eve: 'Who's That Girl'
2. (1) Bruno Mars: 'Grenade'
3. (*) Enrique Iglesias ft. Ludacris & DJ Frank E: 'Tonight (I'm Lovin' You)'
4. (5) Chris Brown: 'Yeah 3X'
5. (15) Wynter Gordon: 'Dirty Talk'
6. (4) Katy Perry: 'Firework'
7. (3) Black Eyed Peas: 'The Time (Dirt Bit)'
8. (6) Kesha: We R Who We R'
9. (8) David Guetta ft. Rihanna: 'Who's That Chick?'
10. (7) Jessica Mauboy ft. Ludacris: 'Saturday Night'