M.!.
I had a son first and then a daughter. The first year was def a lot easier to reuse boy clothes on a girl, but as they have gotten older it has gotten harder. I used all his jeans on her the first year and even some sleepers I used - since she was sleeping in the house and we were not out and about. Also reused crib sheets even tho they were boy themed - and same with blankets. But, back to clothes, if I had something that looked boyish I just added a pink something to go with it and "girled it up".
Good luck and Congrats!