I've so far lost nearly 4 stone (1lb away) went from a size 20 to a 12 and people are only just saying stuff now. I had a couple of people notice when I was a size 16, one person I used to know who I haven't seen for a long time didn't even recognize me the other day which was quite funny. I'm short too so think it shows more. Don't worry about others not noticing, it could be that they don't know what to say but soon you will be getting comments, I'm sure.
xxxx