I love http://www.celebrity-sunglasses-finder.com i think they are right 99.9% of the time. Sometimes they get it wrong, but they ratify it as soon as possible wen it come to their attention...but no one is perfect.
I thought it was Tom Ford Cyrlile style too...it was strange to think that Kim Kardashian would be caught dead in Guess. I think Guess ripped-off Tom Ford's style...well no suprises there.
But if you want a similar pair to the Tom Fords, you could get the Guess considering they are a lot cheaper.