The name Sydney is a girl's name of French origin meaning "Saint Denis". A couple of decades ago, nerdy boy Sidney morphed into a polished, poised, creative, elegant girl Sydney. Sydney's been on the rise since the nineties -- it was in the Top 25 from 1999 to 2003 -- but has recently dropped out of the Top 100. Katharine Hepburn played a female Sidney in her first movie, A Bill of Divorcement and lately there have been women named Sydney all over the big and small screens, including Annette Bening in The American President, and on Alias, Parenthood and Hope and Faith. Actor Sidney Poitier named his daughter Sydney back in 1973.