Bimbo

a foolish, stupid, or inept person.
a man or fellow, often a disreputable or contemptible one.
an attractive but stupid young woman, especially one with loose morals.
Contemporary Examples

Cain’s ‘Consensual’ Conduct with Accuser Howard Kurtz November 27, 2011
Rush Limbaugh Isn’t the Only Media Misogynist Kirsten Powers March 3, 2012
James Bond Movies & the Beatles Still Pop-Culture Icons 50 Years After Debuts Malcolm Jones October 4, 2012
Piling on Palin, Hating on Hillary Caroline Heldman November 29, 2008
Confessions of a Barbie Freak Susan Shapiro March 8, 2009

Historical Examples

The Gold Hunter’s Adventures William H. Thomes
Gladiator Philip Wylie
Daisy Miranda Eliot Swan
Gladiator Philip Wylie
Japanese Fairy World William Elliot Griffis

noun (pl) -bos, -boes
an attractive but empty-headed young woman
a person, esp a foolish one
n.

A man, esp a mean and menacing one; baby, bozo: The bimbos once helped pluck a bank/ one of them bimbos which hurls a mean hammer (1920+)
An insignificant person; nebbish: Nobody listened to the poor bimbo (1920+)
A woman, esp a young woman of hedonistic aspect: What kind of a bimbo did he think I am?/ a bimbo with legs that go all the way up (mid-1920s+)
A prostitute; hooker: Some escort services are just fronts for prostitution that men call up and the service just sends out some bimbo in blue jeans from Brooklyn (1920s+)