Sophie Ellis Bextor is the latest star to join the line-up for Southern FM's Party in the Park later this month.
The singer will perform hits such as Murder On The Dance Floor at the free pop concert which takes place in Preston Park, Brighton, on June 23.
Organisers announced former Steps members H and Claire will also be playing, along with Hear'Say, Pop Idol dropout Rik Waller, Alcazar and Busted.
Last week Gareth Gates was revealed as the headline act and pop darlings Liberty X and Sugababes were confirmed.
This year the line-up has been chosen by Southern FM listeners, who called to request their favourite acts.
Breakfast show host Danny Pike said: "We've done our best to ensure Sussex's favourite pop stars are playing at this year's Party in the Park.
"Gareth was a huge favourite but Sophie came a close second - she proved to be a massive hit with our listeners."
Sophie's mother, Janet Ellis, used to present Blue Peter and her father Robin lives in Alfriston in East Sussex.
More acts will be announced next Monday.
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