Four teenage girls, lifelong friends, spend a summer apart. The one common thread through their vacations, which all prove to be rites of passage, is a pair of jeans that magically fits each of them.
Sisterhood isn't really about the pants (the girls take turns wearing them). It's about those painful steps toward maturity. A father remarries. Terminal illness creeps in. Things gets weepy—sensitive but also a bit slick, in an affirmatively cathartic way. Yet there's one fresh, touching performance: Blake Lively, 17, as a stellar soccer player who sinks into depression after seducing her college-age coach at sports camp. Lively's natural coltish beauty somehow also suggests fragility. Now someone please find out the label on those jeans. (PG)