adjective

(of clothes) suitable for a smart or formal occasion.

wear something dressy, Kate, we’ve got to go to a drinks party

smart,formal,elaborate,ornate,stylish,elegant,dashing,sophisticated,chic,fashionable,modish,à la mode,sharp,snappy,snazzy,natty,ritzy,classy,swish,trendy,with it,fly,spiffy,sassy,kicky,tony,stylin’