Hi Jo,
Welcome to the forum!
If your hair is baby fine with no body, you won't get any 'wedge' or stack if you cut it to your shoulders. It would have to be up to at least chin length.
However, a bob or page cut is very stylish. There are some nice bobs
HERE I'm thinking of the last one on the page. It can be left longer if you prefer. It can be pulled back and still looks nice down.