14. Nicole Kidman and Naomi Watts
Aussie blond beauties Kidman and Watts go all the way back to their teens, when they were besties at North Sydney Girls High School 35 years ago. Amazingly, the pals both became famous actresses, yet only starred together once, in the 1991 film Flirting. They recently celebrated Watts's 50th birthday in Morocco this September, with a bunch of friends and a banana split.