I confess that "Legally Blonde" and "Clueless" are two movies I love so much that I consider the mere knowledge that they are playing somewhere on TV an order to plunk down and watch them. (See also "Bring it On".) But I feel like there is a fundamental misunderstanding on the part of some people as to what these movies are about.
Some people seem to think these movies are about ditzes or bimbos who triumph over people who think they are smarter. When, in my opinion, these movies are about people who focused their energies on specific things - be it money, clothes, boyfriends, or meddling - and then, made a decision to re-focus their energies. Elle doesn't manage to get into law school due to luck (I mean, okay, there was a little luck, and a little movie magic in getting into a school when acceptance letters had already gone out). Elle, as she says, has a high GPA. Yes, it's in fashion merchandising, but that's because her original life plan was to get married and help the world be beautiful. When Warner shows her that people don't take her seriously because she's pretty, she decides to prove she knows how to be serious by his definition. And yes, in the end Elle's knowledge of hair care (and of who would be more likely to recognize her shoes) helps crack the case, but Elle had already figured out that the law had it's uses when she was able to help Pauline get her dog back from her ex-boyfriend.