Showy
Gorgeous, Glamorous
noun, な adjective
Something that is showy is showy.
はなやか
For the reading, think about something that's showy... in particular, 花s (はな). Flowers are super showy, always showing off their colors and stuff.
いつか綺麗なドレスを着て、華やかなカクテルパーティーに行ってみたいな。
I want to go to a glamorous cocktail party in a beautiful dress someday.