Just got these on sale from Amazon, in Sand 8.  I normally wear 7, and based on all the reviews that said they're snug, I ordered a size up.  they came, and are definitely too big!  I wish I'd gotten a size 7.  My foot length is 9 1/4, and there's significant space at the end of this clog.  I'm Asian, 130lbs,  and 5'4", so if you're built like I am, consider staying with your true size.
Also, if you're thinking of wearing them outside, buy a dark color.  I got the sand, and everyone thinks I forgot to put on my shoes!