beanie, n.² — Green’s Dictionary of Slang

beanie n.²

also beany

[? she is ‘keen as a bean’]

(UK teen) an attractive young woman.

1997		‘Q’ Deadmeat 40: Tahl, jus ow mi like dem. Nice beany.
2003		BlazinParadise ‘Blazing Squad Language’ 🌐 Beanie – Nice looking girl.
2003		Dizzee Rascal ‘Fix Up, Look Sharp’ 🎵 Stand up in the Parks, keep a firm, steady stance, / Keep the beanies touchin, keep the beanies hot flushin.