Lawson and Stooshe have been added to the line-up for this year's T4 On The Beach.
The 'When She Was Mine' singers were confirmed for this year's event, which takes place at Weston-super-Mare in July, alongside girl trio Stooshe and Taio Cruz.
"Well seeing as T4 have announced it I am guessing I can… we are playing T4 On The Beach!!!!! WOOO," Lawson's Joel Peat tweeted fans last night (May 31).
Wretch 32, Conor Maynard and Rita Ora will also perform at the event, which takes place at Weston-super-Mare beach on July 1.
T4 presenter Nick Grimshaw said: "The line-up this year is looking truly awesome and it's definitely going to be a great party to kick off the summer!''
"Make sure you get your tickets soon to join us on the beach for a day "
Little Mix, Dappy, Labrinth, Professor Green, Rizzle Kicks and Cover Drive have been previously announced for the festival.
T4 On The Beach will celebrate its tenth anniversary in 2012, with the show also including appearances from the cast of Made In Chelsea.
2012 Hottest Festivals!