How to approach a chubby woman if you don't know her?

I know it's bad to approach a woman based on her "weight" but I have never felt a strong attraction to any other type of body. I'm not really sure how to approach her, I don't want to come off as some kind of fetishist and I believe she'll be turned off if I approach her in the wrong way.<br><br>I might know one such woman, she has no idea how much she's impressed me.