Kimberly or Kimberley?

On warm days, a topless Kimberly Parrott casually walks her Lab cross, Underdog, in the parks of New Westminster and Burnaby.
[Article's photo caption: Kimberley Parrott bares her breasts in public to make a statement to young kids that there is nothing shameful about the human body.]
-- Nudity: the new normal? (online: Is nudity the new normal?) in The Georgia Straight, Thursday June 19 2008

I assume one is correct (though maybe it's really Kymberly), but I don't know if the other one is missing a letter or if it contains an extra letter.