I usually prefer the C as well.
But
Karly isn't trendy to me because
Karl is the traditional spelling of
Carl in many countries.
I like
Karly and
Katherine and apart from that I usually prefer Cs (
Caitlin,
Courtney,
Cara,
Chloe,
Clara).
I love your username, by the way :)
Belphoebe.
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https://www.behindthename.com/pnl/6232