Singer Vanessa Amorosi has debuted at number one in the Aussie singles chart with 'This Is Who I Am'.

The Australian knocks David Guetta and Akon off the top spot, ending the duo's second spell at the chart summit.

Robbie Williams's comeback track 'Bodies' enters at four, while Britney Spears's new single '3' is the biggest climber, moving from 50 to seventh.

Elsewhere, Michael Buble's latest LP Crazy Love debuts at number one on the albums chart.

The Top 10 singles in full (click where possible for our reviews):

1. (-) Vanessa Amorosi: 'This Is Who I Am'
2. (1) David Guetta ft. Akon: 'Sexy Bitch'
3. (2) Black Eyed Peas: 'Meet Me Halfway'
4. (-) Robbie Williams: 'Bodies'
5. (3) Guy Sebastian: 'Like It Like That'
6. (4) Black Eyed Peas: 'I Gotta Feeling'
7. (50) Britney Spears: '3'
8. (5) Cascada: 'Evacuate The Dancefloor'
9. (7) Pitbull: 'I Know You Want Me (Calle Ocho)'
10. (8) Cobra Starship: 'Good Girls Go Bad'