The 23-year-old New Yorker will play her first Irish headliner this summer on July 1.

Already too big for her recent Pussycat Dolls support slots, Lady GaGa has only gotten bigger since, topping the single and album charts with 'Just Dance', 'Poker Face' and debut LP The Fame.

Tickets for the singer's Live At The Marquee performance are on sale from next Thursday, April 2, priced €39.20 (seated & standing).

Also recently announced for the summer festival are Tracey Chapman, who plays on June 22 (tickets on sale March 30, priced €49.20 seated, €44.20 standing); Chickenfoot, who play on June 23 (tickets on sale March 31, priced €44.20 seated & standing); and Kanye West, who plays July 8, with tickets now on sale for €69.50 (seated & standing).