Because I realized I'd overlooked quite a few famous brunette beauties.
Halle Berry
Eva Green. Reddish hair in the second pic, but still counts, yes?
Olivia Wilde (Black Donnellys, House, The O.C.)
Carrie Ann Moss
Isabelle Adjani
Natassja Kinski
Jaclyn Smith
Carrie Fisher
Raquel Welch
Sophia Loren
Audrey Hepburn
Dorothy Dandridge
Gene Tierney
The divine Louise Brooks
Josephine Baker
ETA:
Diane Lane. So gorgeous! I LOVE HER. She gets three photos because I forgot her. Twice!
Carla Gugino
Jessica Biel. Of all the "hot" actresses out there, I think she's the hottest. Srsly!
And I'm sure there's still many more I've forgotten!