Amy Winehouse and Kate Nash do battle

Amy Winehouse will battle Duffy and Kate Nash at this year's Vodafone Live Music Awards, in a bid to retain her Best Female title.

The three singers - along with 'American Boy' star Estelle - are all nominated for the honour at this year's ceremony.

Amy is the only winning artist to be nominated in the same category for a consecutive year.

Last year's Best Tour winners, Muse, are up for Best Live Act, and will go up against Kaiser Chiefs, Primal Scream and The Verve.

The Verve, fronted by Richard Ashcroft, are also up for Best Live Return – making them the only act to achieve two nominations.

Elsewhere, Mark Ronson, Dizzee Rascal and rock veteran Paul Weller will compete for the Best Male award at the ceremony, which will take place on September 18 at London's Carling Academy, Brixton.

The shortlist was decided by a panel of music experts, with fans choosing the overall winners in each category via internet and text message voting.

The Vodafone Live Music Awards 2008, full shortlist:

Best Female:
Amy Winehouse
Duffy
Kate Nash
Estelle

Best Male:
Mark Ronson
Dizzee Rascal
Morrissey
Paul Weller

Best Live Act:
The Verve
Kaiser Chiefs
Primal Scream
Muse

Best International Act:
Foo Fighters
Jay Z
N*E*R*D
Kings of Leon

Best Live Return:
The Verve
Spice Girls
Led Zeppelin
Iron Maiden

XFM Live Breakthrough:
The Ting Tings
Glasvegas
Foals
The Wombats

Best Festival:
Reading/Leeds
Glastonbury
T in the Park
Latitude

Sony Ericsson Tour of the Year:
Take That's Arena Tour
Sugababes' 'Changes' Tour
NME Tour 2008
Girls Aloud's 'Tangled Up' Tour