Synonyms For "Fashionableness" :
1 syllable:
cool, in, mod, quaint, spruce, swank
2 syllables:
dapper, dashing, faddish, faddy, groovy, in style, in vogue, jaunty, latest, modern, modish, natty, olde worlde, raffish, rakish, snappy, spiffy, stylish, swagger, swanky, trendy, voguish