right up one’s alley

(right) up (one's) alley

Ideally suited to one's interests. Anna loves watching movies, so I'm sure she'll go to the film festival with you—that's right up her alley.
See also: alley, up

(right) up one’s alley

mod. exactly one’s kind of thing; exactly what one is best equipped to do. It’s not exactly up my alley, but I’ll try it.
See also: alley, right, up