Lexie & Christopher are a dance duo who reached the Semi-Finals of Britain's Got Talent in Series 12. They had been performing with each other for 2 years prior to their audition, and before their audition Alesha asked Christopher whether Lexie was the boss, to which he replied 'Well, she thinks she is'. They were both 10 at the time of their audition.
In their audition, the pair performed to 'Dear Future Husband' by Meghan Trainor - 'Because he's my future husband', Lexie explained. Christopher however did not appear to agree with this statement. In their audition, the duo began by walking towards each other from differing sides of the stage, the pair then danced alongside one another in unison. The duo concluded their performance with Christopher spinning Lexie around and catching her after she fell backwards. Alesha described the pair as 'Like little butterflies', with Simon adding 'We’re going to remember your personalities as well'.
They began their Semi-Final performance with what seemed to be a ball, with Christopher dancing with a woman, before Lexie then walked upon the stage. The pair then performed a routine alongside one another to 'Bad Romance' by Lady Gaga and 'Shut Up and Dance' by Walk The Moon, culminating the performance by holding one another's hands as confetti fell down upon the stage. Amanda commented that Lexie had actually 'Let [him] lead for once', with David joking that the pairs relationship actually reminded him of both '[Him] and Simon'.