K *im Kardashian *has undergone a geeky makeover to disguise herself for an appearance on an undercover TV show.
The reality star sports a brown, curly wig, false teeth, glasses and prosthetics on her face for a spot on *Wendy Williams *' new TV show Celebrities Undercover, in which stars undergo a dramatic makeover to fool fans.
The brunette beauty traded in her figure-hugging frock for a frumpy purple ensemble with matching mauve specs and puffy face prosthetics to join the interview as fan "Cynthia".
The three fans had no idea they were sitting right next to their idol as they were quizzed on their Kardashian devotion.
Even sister *Kourtney *was fooled - when she showed up, she mistook "Cynthia" as one of the fans auditioning to be an assistant.