Now this is interesting! Maybe it's a regional thing, but I've only met I think two Katies in my life, both my age (Millennial): one was short for Kathleen, and the other Katelyn (both to my surprise). In fact, I think I've known more Caitlins / Kaitlyns (mainly those spellings) in my life than Katherines / Catherines, and nearly all the Caitlins went by their full name. Most of of the Katherines, too - at least, the ones my age (Kathy / Cathy is the most common nickname of the ones of my parents' generation).I myself like Kat and Kate, but not Katie.***Please rate my personal name lists:www.behindthename.com/pnl/69381 www.behindthename.com/pnl/69381/109399 www.behindthename.com/pnl/69381/91835 http://greens-end.myminicity.com/