At the Berlinale, everything is usually red and gold - the Golden Bear, the red carpet, the red logo. But in the midst of these familiar festival colours, a glaring toxic green has muscled in this year - it is 'brat'.
'brat' is the title of what is probably the best-known album by the British singer Charli xcx. But the term has long since stood for more than just music: for an attitude, a feeling for life, an aesthetic somewhere between self-empowerment and calculated provocation.
