choosy : someone who is choosy will only accept food, clothes, job etc. that they consider to be very good. (Longman)
: careful in choosing; difficult to please. (Oxford) ☆My sister is very choosy about her clothes.
類似語としてあったのが picky : someone who is picky is difficult to please because they only like particular things, or only like things to happen in a particular way. ☆a picky eater (Longman)
: (of a person) liking only particular things and difficult to please. (Oxford)