Nice underwear help

So I've lost a fair bit over weight over my relationship. I've gone from a soze 14 down to a size 4. I have lost all boobs and bum I had and I just feel deflated but I want to try make myself feel a bit better. Sexier and less like a dying victorian child. Does anyone know any styles or types of things I could wear that would be comfy but nice to look at for someone else. Or just something that isn't my standard granny pants and a sports bra that feels like a vest 🤣 please help