The Official chart revealed the 2013’s biggest selling single so far is Will.I.Am and Britney Spears’ “Scream And Shout”, which has sold 234,000 copies year to date (513,000 since its release in December 2012) in the UK.

The song enters top 5 Billboard Hot 100 this week and lands at number 4 on Billboard Hot Digital Songs selling 170,000 units this week (total 1,667,000). The song also certified platiumum by RIAA for shipping 1 million copies.

This week, Scream and Shout officially hits 100 million AI becoming Britney’s second biggest radio hit after “I Wanna Go”