Swoon time! The Capital Summertime Ball with Vodafone just got an injection of testosterone with the addition of Nick Jonas and Rixton to the ever-growing line up.

Nick, who is due tofollow up his No.2 hit 'Jealous' with 'Chains' on 10th July, previously told MTV:“The story behind ‘Chains’ is basically that feeling that all people can relate to, it’s being trapped. For me specifically in this song, I connected to love and trust and for some people they have said it’s broader for them, it’s more than love, it can be about anything that entangles you in your life and doesn’t let you do what you need to do to feel free.

“I think this is a good fit and I fell in love with the song and I really feel like it has become a staple for this album.”

The Jonas Brotherwill take to the stage at Wembley Stadium as well as British four-piece Rixton, who topped the UK charts last summer with 'Me And My Broken Heart'.

Yesterday, LunchMoney Lewis was added to the line up which so far includesOne Direction, Ariana Grande, Avicii, Ne-Yo, Kelly Clarkson, Flo Rida, Olly Murs, Jason Derulo, Carly Rae Jepsen, Jess Glynne, Meghan Trainor, Martin Garrix, Pitbull, Rita Oraand Little Mix. More acts are due to be announced later this week.

'Capital's Summertime Ball takes place on 6th June.'