It's all in aid of Boom Clap - the very good song she's contributed to The Fault In Our Stars soundtrack. The music video, streaming below, sees Charli gallivanting around the Dutch canals, interspersed with clips from the film (so expect to see a lot of Shailene Woodley breathing through a nose tube).
OK, it's not going to result in a re-evaluation of the music video milieu, but it would be nice to see Charli get a boost from such a high-profile film soundtrack. It still baffles me that she's had two US number ones as a featured artist (on Icona Pop's I Love It and Iggy Azaelea's Fancy), while resolutely failing to send any of her solo records into the chart.
Fingers crossed, then.