"Stay" is a song by UK-based pop act Shakespears Sister, released in January 1992 by London Records as the second single from their second album, Hormonally Yours (1992). The single was written by Siobhan Fahey, Marcella Detroit, and Dave Stewart, and became a massive hit. It is the duo's first and only number-one single in numerous territories, including the UK, where it topped the UK Singles Chart for eight consecutive weeks and was the fourth-biggest-selling single of 1992. "Stay" also reached No. 1 in Sweden and in band member Siobhan Fahey's birthplace, Ireland. It was a transatlantic hit as well, reaching No. 4 on both the US Billboard Hot 100 and the Canadian RPM 100 Hit Tracks chart. Its music video was directed by Sophie Muller and drew inspirations from the 1953 film Cat-Women of the Moon. At the 1993 Brit Awards "Stay" won the award for British Video of the Year.

Hormonally Yours is the second studio album by British pop-rock act Shakespears Sister, released on 17 February 1992 by London Records. The album went on to become a critical and commercial success, and is their best-selling album to date. Hormonally Yours peaked at No. 3 on the UK Albums Chart and has been certified double platinum by the BPI, spending 55 weeks on the chart. The album spawned five singles, three of which reached the UK top 20. The album's second single, "Stay" became the group's best-selling single, topping the UK Singles Chart for eight consecutive weeks. It also peaked at number four on the US Billboard Hot 100.