Big Brother’ housemates will be temporarily released from the house for the first time.

The housemates will be allowed to exit the ‘Big Brother’ house later in the series to perform an all-singing, all-dancing task based on the musical TV show ‘Glee’ in front of their fans.

A source revealed: "This should be one of the most fun tasks in the series, which all ‘Glee’ fans will love. ‘Glee’ has been the TV hit of the year, so it's only right that the ‘Big Brother’ housemates get involved."

The source refused to reveal details of the routine saying: "We can't reveal what the challenge will involve because we are trying to keep it secret. But it will involve the housemates singing. It will be ‘High School Musical’ meets ‘Glee’ meets ‘Big Brother’. Let's hope all the housemates are Gleeks!"

However it is believed that the housemates - coached by ‘Pineapple Dance Studio’ star Andrew Stone – will perform a song and dance routine to the hit song ‘Don’t Stop Believin’.

The singing challenge based around the hit US musical comedy series will be judged by fans who will decide if the housemates deserve the prize of a luxury budget or if they will have to survive on rations in the house.