Christina Aguilera shows off her legs, wearing a very short skirt and a colorful stop, as she stands next to Cher on the set of Burlesque.

Christina Aguilera’s upcoming album Bionic has been postponed, according to a statement by RCA Records. The singer’s fourth studio album was originally scheduled for a March 2010 release but has now been pushed back to April.

‘Glam’, the first single from Bionic, is expected to hit radio airwaves in February. Aguilera has worked with collaborators including Goldfrapp, Ladytron and M.I.A on the album, as well as past producers Linda Perry, Tricky Stewart and The Neptunes.