Get yourself over to FashBlog.com and check out the post Fashion Perils of the Short and Small. (You'll have to scroll down the page a bit to get to it.)
Much as I am presently bitchin' about the issues of being a size 18W (Well actually I'm a size 18W and a 14 Reg -- but THAT's a whole 'nother post!), there was a day when I was in this young lady's shoes - size not height - and I know what it's like to wonder if it is possible not to look like a stick in a handkerchief in anything you wear.
It's a great post so if you can check it out! Makes one wonder doesn't it if it is reasonably possible to be fashionable at all - 50 plus or not!