It's Not Me, It's You is the second studio album by English singer Lily Allen, released on 4 February 2009 by Regal Recordings and Parlophone. It was produced and co-written by Greg Kurstin, with whom Allen had previously worked on her debut studio album, Alright, Still (2006). The album represents a departure from the ska and reggae influences of its predecessor, incorporating electropop with elements of jazz.

Lily Rose Beatrice Allen is an English singer-songwriter and actress. She is the daughter of actor Keith Allen and film producer Alison Owen. Her musical career began in 2005 when she was signed to Regal Recordings and began publishing her vocal recordings on the social networking site Myspace; their popularity resulted in airplay on BBC Radio 1. Her 2006 debut commercial single, "Smile" reached number one on the UK Singles Chart by July of that year and received double platinum certification by the British Phonographic Industry (BPI). Her debut studio album, Alright, Still (2006) explored ska and reggae. It was met with positive critical reception, peaked at number two on the UK Albums Chart, and sold over 2.6 million copies worldwide. The album also yielded a Grammy Award nomination for Best Alternative Music Album and spawned the follow up singles "LDN" and "Alfie".