From Longman Dictionary of Contemporary Englishdressydress‧y /ˈdresi/ adjective 1 DCdressy clothes are suitable for formal occasions Her outfit was smart but not too dressy.2 DCsomeone who is dressy likes to wear very fashionable or formal clothes
Examples from the Corpus
dressy• All the doll clothes that my Sister makes are dressy.• But they can keep the dressy culottes and pantsuits as long as they are part of a coordinated outfit.• All this is far superior to the dressy emptiness of the last star-studded Haymarket revival.• He's a dressy fellow himself.• a dressy silk suit• All were so shabby they might have been worn by a dressy tramp.• She describes her style as sportif for work, more dressy when she's with family and friends. 