Katy Armstrong is a fictional character from the British ITV soap opera, Coronation Street, played by Georgia May Foote. She made her first appearance during the episode broadcast on 30 July 2010. Foote had previously appeared in the soap in January that same year as Jess Burrows. Katy is Owen Armstrong's (Ian Puleston-Davies) youngest daughter and Izzy Armstrong's (Cherylee Houston) sister. Her storylines have mostly revolved around her relationship with Chesney Brown (Sam Aston), her pregnancy and being a mother to Joseph and embarking on an affair with Ryan Connor (Sol Heras). Foote's departure from the show was announced in April 2014, with her having filmed her final scenes on 16 February 2015 and departed on 20 March 2015. Katy was killed off-screen in a car accident in Portugal on 18 October 2017.