What are some cute pet names for Kaitlyn?

She hates Katie, so that is entirely out of the question. i want something different. not like kitty kat or some lame play on words like that... i need help finding something incredibly sweet. i've been beating myself up over this topic for about 2 or 3 weeks now. the best i've come up with is Rosie cuz her middle name is rose, but that just sounds kinda lame to me... please, help will be greatly appreciated. preferably help from females though, being a guy, i know how -ish we can be towards a topic such as this. thank you all