Here is a link that I have used many times in the past for pics: http://www.google.com/images?hl=en&q=short+haircuts+f...
I have a version of the Meg Ryan cut on the first page :)
I, too, have very thin hair. I have Lupus that can cause hair loss as well. I haven't found any magic answers yet, but the two things that have helped a little are taking vitamin E and switching over to Nioxin hair products. I use the shampoo, conditioner, scalp treatment and follicile booster. It's not cheap, but it lasts a long time and I order it off the internet at SN2000 (I think) and they give discounts and free shipping. One more thing I want to mention is that before I got my hair cut short last year, I was putting it up in ponytails all the time, too. My hairdresser said that for how fragile my hair is, that wasn't a good idea. She says that it puts a lot of stress on the roots and scalp, increases breakage, and traps oil on the scalp.
Good luck!