This new style of panties for the ladies is currently being hawked at Victoria's Secret:

It's kinda creepy. I mean, if a guy thinks that's sexy, I would hazard a guess that he might also like little boys.

Now, it's okay for girls to wear boxer shorts as pajamas - that's quirky. I happen to have a pair of Spongebob Squarepants boxer shorts for slumber parties. Just like it's okay for women to wear trousers, but not so okay for men to wear dresses, except where it's a cultural thing, and the only instance that springs to mind is kilts.

This topic is getting dangerously close to the subject of cross-dressing men, and I'm not prepared to go there right now. So I'll close by saying, when it comes to underwear, vive le difference!