You are stunnig, but my belly is bigger than yours, grin. For someone as slim as you are, that is a lot of belly fast. It looks fabulous, but it is impressive.
My belly is bigger more because I have no muscle tone from two c/s, three term pgs, and too much extra weight. I'll post a pic in a few mos when I'm looking more pg and less just plain fat!
I'm only 5 ft tall too, and have gotten bigger and bigger with each pg. Last time I was out to something like 58cms by 32 weeks and was scaring people. The baby wasn't even all that huge, just an 8lber, long and lean. At the rate I'm going I'll be at 60cms by 28 weeks with this one, and the baby will be even smaller! My first two were 9lbers, maybe this one will be a 7lber, shrug.