Lying Scale?

What's the deal?  I got on the scale yesterday and was *at* my wedding weight.  (Yea, me!)

Fat percentage was down to 28.4% - huge improvement. (Yea, me!)

I stepped off the scale, turned it off.  Weighed again and got the same results.

So...

How come my measurements are the same and my jeans don't fit any better?  Anyone?  Someone?

~ G