"Littlest Things" is a song by English singer Lily Allen from her debut studio album, Alright, Still (2006). Written by Allen and Mark Ronson, the song was released as the third single of the album on 11 December 2006 by Regal Recordings. It incorporates a piano sample from Pierre Bachelet and Hervé Roy's music from the softcore pornography film Emmanuelle, for which they were credited as co-writers, as the lyrics tackle the singer dealing with the departure of her boyfriend, while reminiscing about their time together. The song was created in a New York studio, after Allen had met Ronson, who was impressed by her previous work and offered her different samples.