Are they time-traveling pants?
I went to see The Sisterhood of the Traveling Pants tonight, and yes, I cried, because that's what girls are supposed to do at this kind of movie. But one thing about the story kind of bugged me: the complete lack of cell phones. When one of them leaves another one a message, it's on an answering machine! The book was written in 2001, so maybe that sort of explains it, but would it be so hard to make a few little updates?

In the movie, it's supposed to seem totally crazy that a magic pair of pants can fit four different-sized girls. I think it's a bigger fantasy to imagine that you could find a group of four middle-class teenage girls without a cell phone among them. Instead of a "friends and family" plan, the girls in the movie communicate through emotional letters that accompany the pants they're mailing around. Letters and shared pants are nice, but if I'm experiencing a personal crisis like the ones in the script, I'll take cell phones and email any day.