Making his first stage appearance since announcing her divorce, Christina Aguilerapartook in Justin Timberlake & Friends concert at Planet Hollywood Resort and Casino in Las Vegas Saturday night, twenty-third of October. Occurred during the annual Hospital Timberlake Shriners for Children Open, "Burlesque" beauty joined Justin, Sir Elton John and T-Pain, while rocking the stage with the proceeds going to Shriners Hospitals for children.