 The single was ranked at number two on the 2018 UK Singles Chart Christmas number ones, as LadBaby reached number one with his cover of the 1985 Starship song "We Built This City", which outsold "Sweet but Psycho" by 18,500 units.On the Irish Singles Chart, the song reached number one, where it remained on the chart for 53 weeks.It also reached number one on the 2018 Irish Singles Chart Christmas number ones, beating Ariana Grande's "Thank U, Next" by 300 units in sales.