ditzy

adj

1. (informal)Silly or scatterbrained, usually of a young woman.

   “What’s more, Friends offers someone for everyone: a tall, dorky, insecure guy (David Schwimmer); a ditzy, guitar-strumming blonde (Lisa Kudrow); a handsome, jean-clad palooka (Matt LeBlanc); a sarcastic, 9-to-5-ing funnyman ([Matthew] Perry); a dark-haired, blue-eyed Veronica (Courteney Cox); and a spoiled suburban princess just finding her legs ([Jennifer] Aniston).”

   “The guy tossed some cash on the counter, then left with the ditzy girl and Abigail's fan.”

   “[…] —and she'd smile like a primly mischievous Japanese girl, or like some slyly ditzy ingenue on a talk show, all the while watching her interrogator try to fathom (though sometimes they were pretty dim and just said, “Oh”) the surprising cleverness of her answer.”

   “After hiring a crew of young guys and gals including loyal Jo, unlucky-in-love Frankie, strapping Bob, wisecracking Dee Dee, ditzy blonde Jonesy and titian-haired Penny, the gang drives up to the lodge.”