'Boom Clap' has become her biggest solo hit!
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Charli XCX: 10 Facts About The 'Boom Clap' Singer
9. 'Boom Clap' has become her biggest solo hit!
The track, which is the first to be taken from her upcoming album, was used on the official soundtrack for the movie 'The Fault In Our Stars'. It reached number 5 in the Vodafone Big Top 40 in July 2014.