Dec seemed to make a blunder during tonight's semi final of Britain's Got Talent as he got the identity of one of the contestants wrong.
A member of the children's dance group, The Pixiebelles, shook their head in disbelief at Dec's mistake and fellow presenter Ant couldn't help but mock his mate.
The Pixiebelles said they had been doing "loads of research" ahead of tonight's performance of The Little Mermaid's song 'Under the Sea'. So when Ant and Dec joined the group for a post-performance interview, one group member seemed insulted when Dec appeared to get the youngster's identity wrong.
