A rich suburban housewife, who lives in a huge house with a maid and a gardner and a very rich husband, nearly always very WASP like.
Originates from the Brentwood district in L.A but now applies to rich women of all areas.
Sandra Bullock in Crash, Anglina Jolie in Mr and Mrs Smith, Kirsten Cohen in the O.C
-hey, see that woman on the schoolrun in her big black SUV?
-yeah, what a Brentwood Housewife!