Athleta is actually a good brand for all kinds of bodies. They have work out tops for women that are sized by bra size! And it does up to larger sizes not just like AAA32. So you get a really nice fit. Like I actually bought a bathing suit by them after not owning one for a decade. It’s not the cheapest but their stuff is durable, and you can find women’s stuff in there that isn’t like baby pink.
Good luck and good for you for taking care of yourself!