I have a conceited/insecure friend?

Hello, I have a friend that I work with, who is a pretty girl, however she is kind of conceited, or maybe a little insecure. Usually when I'm having a conversation to her, the topic usually develops into her looks, or how hot people think she is, or how many men are in love with her, or that some woman or women are jealous of her. It makes me a little uncomfortable because often I don't know how to respond to her when she tells me things like this, and sometimes it even gets a little offensive because I feel as if she is bragging or TRYING to make me jealous of her. Should I just leave it alone and chalk it up to something that she just has to do in order to keep from feeling insecure, or should I maybe tell her something or hint to her that not everyone wants to have a two-hour conversation about how "hot" she is, etc. ? She is generally a very sweet girl, I just hate how she feels that she must report to whoever she can when a guy gives her attention. Do I sound like a hater? Or is it normal to feel a little uncomfortable in these types of situations?