The 20 Blondest Blondes

Tara Reid- The plastic surgery, the incessant boozing, the nonsensical statements- Tara Reid fulfills every negative blonde stereotype to perfection! (AP Photo )

Matthew McConaughey- No one has mastered the ditzy blonde surfer-dude persona quite like Matthew McConaughey. Not that his himbo antics don't make ladies swoon (AP Photo )

Pamela Anderson- For Pam Anderson, blonde isn't just a hair color; it's an attitude, persona, and way of life! (AP Photo )

The Girls Next Door- If we learned anything from The Girls Next Door (Holly, Bridget, and Kendra), it's that bleached blonde, big-busted gals definitely know how to party! (AP Photo )

Kate Husdon- Kate Hudson's free-spirited, laidback attitude totally encapsulates the blonde California girl spirit (AP Photo )

Goldie Hawn- Goldie Hawn is the master of playing the lovable ditzy blonde- both onscreen and off! (AP Photo )

Cameron Diaz- No matter what she's doing, Cameron Diaz always looks like she's having a blast. Must be a blonde thing… (AP Photo )

Scarlett Johansson- Screen siren Scarlett Johansson is the epitome of a blonde bombshell with a look that harkens pinup girls from the 40's and gets the pulses of men of all ages racing. (AP Photo )

Brad Pitt- When it comes to the fellas, there is no hotter blonde than Brad Pitt. (AP Photo )

Whitney Port- Whitney Port rose to fame playing second fiddle to another blond, Lauren Conrad, on 'The Hills' and her adorable ditzy antics and wacky facial expressions gave her a strong enough fan base to carry a pseudo-reality series of her very own. (AP Photo )

Spencer Pratt- Spencer epitomizes the 'smart dumb-blonde' ideal. Everything he says is utterly moronic, but his capacity to manipulate and connive in order to get his way is pretty extraordinary. (AP Photo )

Anne Heche- Anne Heche took the whole ditzy blond thing to the extreme when she went a little loopy and wandered around thinking she was a Martian or something nutty like that. (AP Photo )

Katherine Heigl- While she's not a typical dumb blonde, Katherine Heigl has been known to say a lot of really dumb things, hence perpetuating the stereotype. (AP Photo )

Christina Aguilera- With her fondness for old-school Hollywood glamour, Christina Aguilera is like a testament to the blonde bombshells from the days of yore. (AP Photo )

Owen Wilson- Smooth-talking, shaggy haired Owen Wilson is a lovable dumb-blond-surfer-boy. (AP Photo )

Heidi Montag- Some say blondes are dumb. Exhibit A in this argument is Heidi Montag and every single idiotic move she's made since falling under Spencer Pratt's evil spell. Maybe he's slipping something into her bottles of bleach to make her more pliable (AP Photo )

Ashley Tisdale- High-School Musical star Ashley Tisdale is new to the ditzy blond club and she seems perfectly at home with this persona. (AP Photo )