Yes, of course. There's absolutely nothing wrong with that.
If I were you, it wouldn't be one of the first things I told her, just because it's something sorta personal. [That's just me though; if you feel comfortable opening up to her about it right away, or feel that that's the best thing to do, go for it!]
Although, after a while &when you're comfortable with her, let her know, since it's a part of you &maybe it help her to know you a bit better. Everybody has their own little idiosyncrasies; maybe she'll then share something more personal about herself.