Some say it all started with Marilyn.
Smart enough to play dumb.

Lots of actresses starred in roles playing the classic "Dumb Blonde"

Marilyn Monroe, Jayne Mansfield, Goldie Hawn, Suzanne Somers, Christina Applegate, Reese Witherspoon, Jaime Pressly.

One thing is for sure, they all made a lot of money playing those roles.

Maybe not so dumb after all.