The Jonas Brothers have cancelled their upcoming US tour because of creative differences. They were meant to play a gig on Friday in Upper Darby, Pennsylvania, followed by 18 other dates. Spokesman Jesse Derris confirmed the cancellation and said that ticket holders could get a refund at the point of purchase. Earlier this week the band were still tweeting about the tour, posting images and encouraging fans to buy tickets. Rumours have appeared in the press suggesting the group may now break up. Bonnie McKee Bonnie McKee, who was due to support The Jonas Brothers on Friday, tweeted: \"Hey guys sad 2 say my tour w @jonasbrothers has been canceled!\" Brothers Joe, Kevin and Nick rose to fame in 2007 with their self-titled debut. Their most recent album, Lines, Vines and Trying Times, was released in 2009. New material had been released earlier this year, including the single First Time, however it is unclear whether a new album is still on the way. The Jonas Brothers All three have starred in numerous television and film projects, including Camp Rock, Hannah Montana and the reality show Married to Jonas about Kevin and his wife Danielle Deleasa. In July the pair announced they are expecting their first child together early next year. In an interview with E! News the eldest Jonas brother said: \"It\'s been the most exciting thing in my life so far. I\'m ready to do this with Dani.\"