The star, who reportedly got married at the weekend, confirms for the summer bash...

BRITNEY SPEARS will join the rock throng at this year’s ROCK IN RIO-LISBON festival.

The star, currently at the centre of a storm regarding a supposed secret marriage – supposedly being annulled today (January 5) – will play the Portugese music marathon on June 5. The event takes place on May 29-30 and June 4-6 at Bela Vista Parque in Lisbon.

However, it will not be Spears’ first appearance at Rock In Rio. She appeared in January 2001, whilst promoting her second album ‘Oops… I Did It Again’.

Rock In Rio has traditionally been held in Brazil, however, this is the first year that the name and ethos of the event has been brought to Europe.

Other artists already confirmed include Metallica, [a][/a] and Slipknot.