One of the curious problems with "Something Borrowed" is that Kate Hudson's performance is too effective. She plays Darcy, the lifelong best friend of the heroine, Rachel (Ginnifer Goodwin). Blond, rich and headstrong, she always gets her way in their relationship. As the film opens, Darcy is about to be married to Dex (Colin Egglesfield), who Rachel has had a crush on since law school. No good can come of this.