I'm (31/m) dating a woman (34/f) with small boobs after dating a few girls with big boobs. How to deal with possible body image issues?

As the title said, my last few gfs have been well endowed, so many so that friends thought it was "my type". I still have their pictures on FB for a few reasons. Recently, I started dating one woman who has pretty small boobs and I really like her.

We've only been on a few dates and haven't been intimate other than heavy making out. But during one of our dates, she seemed a little anxious about the size of her breasts.

At some point, assuming things go well, we'll be FB friends and she'll see pictures of my exes. How should I comfort her to know I like her for her. And she shouldn't worry about her breast size.

I'm thinking as a normal sized guy, if I saw my gf had a few exes that was taller/bigger than me, I'd be self conscious.