Pretty isn't a naughty word. Or, at least, it shouldn't be. We have placed such bizarre limits on what "pretty" is or isn't in our society that we have turned something that should be a kind sentiment into something demeaning and insulting to many women.
Well I, for one, have decided to give social convention a dainty middle finger and take back the word for what it does mean: pleasant, graceful, something that is delightful in several aspects--and not just an extremely warped standard of modern beauty. We are pretty in so many ways: strength, kindness, creativity; all these are things that make us beautiful. We are not here to impress anyone, we are here to share our love of games and geekery and to remind one another of the qualities that make someone truly pretty.
It took me a long time to learn that I'm a great person. It's a hard thing to learn when you grow up in a culture that teaches you that all your self-worth is based upon your looks, but it's not impossible. I'm kind, strong, creative, and intelligent, I'm raising four amazing children into capable adults, I can sing expert on Rock Band and I'm GMing two year-long epic campaigns that have made my players laugh, rage and weep. Quite frankly, I'm bloody amazing. And you are too.