Gaily

наречие 1) весело; радостно Синоним(ы): cheerfully, festively, airily, jauntily, joyously 2) ярко (об одежде) Синоним(ы): brightly, smartly, showily, splendidly

Большой англо-русский словарь

Gaily

also gayly adverb in a gay manner; marked by gaiety

Merriam-Webster's Collegiate Dictionary