Hayley Kiyoko Alcroft (born April 3, 1991) is an American singer, songwriter, dancer and actress. Beginning dance lessons as a child, Kiyoko's interest in entertaining led to her working as a child model and actress. She appeared in a variety of films including Scooby-Doo! film series (2009–2010), Lemonade Mouth (2011), Blue Lagoon: The Awakening (2012), Jem and the Holograms (2015), Insidious: Chapter 3 (2015), and XOXO (2016). Alongside her film roles, she also held a recurring role in the TV series The Fosters (2014) and a lead role on CSI: Cyber (2015–2016) and Five Points (2018–2019).

Kiyoko was a founding member of the Stunners in 2007. The group supported Justin Bieber’s My World Tour, before disbanding in 2011. After this, Kiyoko issued three solo extended plays: A Belle to Remember (2013), This Side of Paradise (2015, which includes the single "Girls Like Girls"), and Citrine (2016). Following the singles "Sleepover", "Feelings", and "Curious", she released her debut studio album Expectations on March 30, 2018. The album reached the top 20 of the charts in the United States, Canada, and Australia. She has also created a comic book, with the help of Naomi Franquiz and Marla Vazquez, based on her song "Gravel to Tempo". Kiyoko released her fourth extended play I'm Too Sensitive for This Shit on January 14, 2020, and is set to release her second studio album Panorama on July 29, 2022.