Good gift for a celebrity?

So, I have been a HUGE Kelly Clarkson fan since she won American Idol and I'm FINALLY going to meet her on Friday! (My 7th KC concert...lucky number 7!!!) I've always thought about what I'd say at a meet and greet or what gift I'd give her but now that I only have 2 days to plan, I'm going blank! Anybody have any good ideas on what to give her?