Camila Cabello achieved the biggest song of 2018 with a song that was actually released the year before, it has been revealed.
"Havana" was released in August 2017, but went onto sell 19 million copies worldwide last year, according to the IFPI.
A large number of those came from "equivalent" sales, which are made up of streams on services like Spotify or YouTube.
Cabello, who established a successful career as a pop solo artist after leaving the group Fifth Harmony, expressed her delight on Twitter, writing: "This song completely changed my life.
"I'm forever grateful to all the people that worked on this song with me and brought 'Havana' to life, and all of you for listening. Heart is in Havana forever! Now back to writing for CC2."
"Havana" broke several streaming records following its release. It is the most streamed song ever by a female artist, having been played 888m times on Spoitify and 2.6bn times in total worldwide.
Frances Moore, chief executive of IFPI, commented: "'Havana' truly was the stand-out hit of the year. Momentum behind the track continued to build and build at an extraordinary rate as it consistently topped charts and leading playlists.
"Camila Cabello is a perfect example of an artist who has drawn on her musical roots to produce her own unique sound that is capturing the hearts of fans all over the world."
