Her height?

I've yet to find two different websites that can actually agree on how tall she is. So far I've seen her height listed as 5'2, 5'3 (this site), 5'5, 5'5.5, 5'6 and 5'7.5.

I would have thought information like that would not be listed unless it was more or less confirmed, (i.e. not just some random idiot guessing based on her appearance in a movie). So why so many discrepancies?