Judges' guesses on who's behind Dressed Crab
Jonathan Ross guessed the celeb behind the Dressed Crab costume was Jamie Foxx, while Maya Jama chose Billy Porter.
Mo Gilliagan went for a different Porter — Gregory — while guest judge Sir Mo Farah thought it was diving superstar Tom Daley.
Davina McCall was convinced it was singer The Weeknd.
Jonathan later changed his guess to Nile Rodgers, Mo switched to Seal, while guest Tom Daley thought it might be Adam Lambert.