jazzy

cool, hip, neat

à la mode (also a la mode), chic, chichi

dapper, dashing, natty, sharp, smart, snappy, spruce

faddish, fashionable, in, modish, stylish, trendy

custom, designer

showy, striking

flamboyant, garish, gaudy, glittery, glitzy, loud, ostentatious, raffish, rakish, swank (or swanky), wild

dapper, dashing, spiffy

agog, alert, awake, open-eyed, up, wide-awake

agile, nimble, spry

bright, buoyant, cheerful, chipper, chirpy, effervescent, sparkly, upbeat

eager, enthusiastic, keen

frolicsome, impish, pixieish, playful

boisterous, bubbly, ebullient, exuberant, high-spirited