Legally Blondes (2009)

When Elle Woods' young, blonde cousins Annie and Izzy moved from England to California, they thought their pink clothes, small dogs and street smarts would make them instantly fit in and feel at home. However, they find they are miles away from the uniform fashions and money-focused power structure of their new prep school. When the school's reigning forces turn on the girls and try to frame them for a crime, Izzy and Annie must use their cleverness and charm to clear their names and show the school that in the classroom or the courtroom, they should never underestimate the power of blondes!