To the OP: Uh...no. Just no. For one thing, what she thinks of your appearance and attractiveness means far less than what you think (or don't think) of yourself. It's sort of like going to therapy because you feel unloveable and the therapist says she loves you as a way to show that you're selling yourself short. The problem is in your perception and self-esteem, not her view of you. What happens if she forgets to say it when you are feeling less-than or, worse, decides not to say it?

It can be a real minefield, depending on the individual. I have made it clear to my therapist that I don't want to talk about appearance (it came up as a result of a pdoc who was always scanning me). She asked me early on if I wanted to work on that, but it's on hold. Just not ready for anything close to it. Someone with a similar history might benefit from a different approach because they're in a place to do that. So. No one size fits all. But generally, what the OP's therapist said feels creepy to me.