Am I too old for her?

I'm 23. I work with a girl who's 17, turning 18 soon (17 is legal in my state). I don't know her that well yet but i already like her and i want to ask her out. I know it's not a huge age difference, but would it come across as weird or creepy for a 23 year old to ask out a 17/18 year old?
Am I too old for her?
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