Weird casting
Surely it would have made more sense for the WASPy Kristin Bell and Sigourney Weaver to have played the formerly popular prom queens/cheer-leaders. And it would have made sense for Odette Yustman and Jamie Lee Curtis to play the more intellectual, feminist, academic high-flyers.
Middle-American WASP women are more likely to be the conventional, conservative beauty queen type than ethnic women who were raised in less patriarchal and more scholarly cultures.
Stupid film anyway, but at least the casting director could have made an effort.