Billie Piper (in-universe)/Non-valid sources

Billie Piper (in-universe) was depicted in several sources considered by this Wiki as "invalid sources".

Biography
At Christmas 2005, Billie was on the set of a Doctor Who episode, filming a scene involving her, Penelope Wilton, and a man dressed as a "Stickleback" - the result of a miscommunication between Russell T Davies and the BBC Wales design department. (NOTVALID: Doctor Whoah!)

On the set of the episode New Earth, she and David Tennant filmed a scene involving "ultra realistic" cat people, an idea that proved inpractical. (NOTVALID: Doctor Whoah!)

She once "freaked out" when David showed her his mole, who he called "Daniel". She later returned to Doctor Who in the episode, The Day of the Doctor, where she played a "completely different character". (NOTVALID: Strax Saves the Day)