Britney Spears
From Tardis Wiki, the free Doctor Who reference
Britney Spears was a 21st century human singer. Her song "Toxic", a "traditional ballad," was played on Lady Cassandra's "iPod". (TV: The End of the World)
Irving Braxiatel once asked Jason Kane to buy him some Britney Spears CDs while on a trip to Earth in the 21st century. (PROSE: A Mutual Friend)
Behind the scenes
She appeared as herself in the Children in Need special Looking for Pudsey.
