The coolest girl ever. Super pretty/hot/beautiful and just all-around awesome. A Kendall is a great friend and tons of guys want her. A Kendall always does extremely epic things that do not seem to go with her girly nature, but just make her even cooler.
Also, the truly correct spelling of the name Kendall (Kendal, Kendel, Kendell are incorrect).
Dude, did you see that girl? She was so hot and awesome that her name must be Kendall.