Billie Paul Piper (born Lianne Piper, 22 September 1982, in Swindon, Wiltshire) is an English singer and actress.
She began her career in the late 1990s as a pop singer and then progressed to acting. Her most famous role is as Rose Tyler, companion to the Doctor in the television series Doctor Who from 2005 to 2006, a role she reprised in 2008 and 2010. In 2007, Broadcast magazine listed Piper at no. 6 in its "Hot 100" list of influential on-screen performers, the top woman on the list. Since 2007 she has starred as the high flying escort Belle de Jour in the TV series Secret Diary of a Call Girl, based on the real life experiences of Dr. Brooke Magnanti.
Piper's first break in the entertainment world came as a teenager, when she was selected to appear on the Saturday morning children's television show Scratchy and Co. Piper later landed a role in a television commercial promoting the pop magazine Smash Hits. Piper was offered a record deal at the age of fifteen, and in 1998 became the youngest artist ever to debut at number one in the UK singles chart with "Because We Want To", released under the stage mononym "Billie". Her follow-up single "Girlfriend" also debuted at number one and her first album, Honey to the B (released immediately afterwards) debuted at Number 14 in the UK album charts.