My boyfriend got me this for Valentine's Day: http://www.tiffany.com/Shopping/Item.aspx?fromGrid=1&sku=GRP03136&mcat=148204&cid=287466&search_params=s+5-p+2-c+287466-r+101323338-x+-n+6-ri+-ni+0-t+ and I absolutely love it! When we went to the store to get fitted, size 5 was working perfectly for me - there was a little push needed to get it past the fattest knuckle and if I "flapped" my hands around, it wouldn't fall off. However, this was after a 40 minute wait in the store and I was very, very warm by the time I was fitted. I was outside a lot today (in cold weather) and I realized the ring is a tiny bit loose - it slides easily and smoothly over my knuckle and if I "flap" my hands around, it'll fall off. It does seem to stay on through normal walking movement. Is this the correct fit? Or should I get the 4.5 size? Any advice or help would be appreciated, thanks!