When not starting fights in empty rooms, you’ll catch Azealia Banks at the aquarium.

The Harlem rapper-not-rapper has been pushing an aquatic theme to her persona for a while – her debut mixtape was called Fantasea, after all – and on October 13 she’ll be taking it to London, by throwing a costumed Mermaid’s Ball party at the Sea Life Centre London Aquarium. Tickets are on sale now, priced at £25 plus booking fee – as Time Out point out, not too steep when you consider that regular entry to the Aquarium will set you back £19.

Naturally, guests are expected to dress up – here’s Banks leading by example at a US Mermaid’s Ball: