Jessie J has been added to the list of top acts that will perform shows as part of this summer's iTunes Festival. 

The 'Price Tag' singer-songwriter is set to take the stage at Camden's famous Roundhouse on July 15 and will play for an audience made up of people lucky enough to win the lottery-style draw for tickets. 

She is currently in America for her musical debut on the iconic show Saturday Night Live and tweeted a message to her fans today, March 10, to let them know how it's going in the USA:

"Omg Saturday night live rehearsals were s s s s sick!!! The band are incredible!!! @NisanStewart hooked me upppp!!! #heartbeats"

Watch Jessie J explore the sights of New York City in her latest video blog, 'Dare Jessie J', here: