JLS launch their new book!

43176, GLASGOW, SCOTLAND - Saturday July 31 2010. Boy band JLS pose for the camaeras at the In:Demand Live concert at the SECC in Glasgow.  Photograph:  Fred Lee, PacificCoastNews.com

Boyband JLS attracted hoards of screaming fans as they launched their new book at Selfridges in London today.

Plenty were so desperate to meet JB, Ortise Williams, Marvin Humes and Aston Merrygold that they camped overnight outside the store.

The X Factor runners-up signed copies of Just Between Us: Our Private Diary and posed for pictures with the fans who had waited in line for hours to buy the book ahead of its official release tomorrow.

Around 400 of the 800 excited fans who turned out to meet the band were able to attend the two-hour signing session.

An ambulance was kept on standby should one be needed, but despite fears that one young fan was hurt, she later turned out to be fine.