Lily Slater is a fictional character in the BBC soap opera EastEnders and is portrayed by Lillia Turner. Lily's first appearance in the serial is in episode 4023, originally broadcast on 23 June 2010, in which her birth is depicted. Lily is the daughter of Stacey Slater and Ryan Malloy. Stacey and Lily both departed on 25 December 2010 at the conclusion of the Who Killed Archie? storyline. On 6 December 2013, it was announced that Lacey Turner would return to the soap to reprise her role as Stacey, and would begin filming in January 2014 – thus meaning Lily would be re-introduced into the serial. Lily temporarily departed the serial on 2 August 2019 once again after Stacey attacks Phil Mitchell in a panic to save Martin Fowler. Lily along with her family returns in episode 6133, originally broadcast on 21 September 2020, two weeks after the soap's return to transmission – this time with Turner in the role.

Stacey Slater is a fictional character from the BBC soap opera EastEnders, portrayed by Lacey Turner. She first appears in episode 2826, originally broadcast on 1 November 2004. The character is introduced as a feisty and troublesome teenager and extension to the already established Slater family. She was created by scriptwriter Tony Jordan with Turner in mind. Producers explored the character's backstory with the introduction of her mother, Jean Slater, who has bipolar disorder. They then paired Stacey with Bradley Branning and writers developed a series of problems for their marriage, including an abortion and Stacey's scandalous affair with Bradley's father, Max Branning.