Tina Barrett

Tina Barrett (Born on September 16, 1976) is an English dancer, singer-songwriter and actress known to be a member of the pop group S Club 7.

Supporting Parts
In Season 3, Episode 10 entitled "Supporting Parts", Tina Barrett accidentally kicks off one shoe during a dance move at a live show and her shoe flies away back stage and it accidentally knocks a Latino superstar unconscious. She goes back stage to retrieve her shoe and puts it back on before going back on stage.

A video of the action can be seen here: https://www.youtube.com/watch?v=e6pYYtaD3K0&t=2m55s.