What's up with my measurements?

Has anyone else had this curious issue...?

I keep track of the measurements for my arms, waist, hips, and thighs...

EVERYTHING is decreasing in inches EXCEPT my waist..... it's getting bigger! When I was at my most fit point about two years ago, I was very muscular and lean with a waist measurement of roughly 26". Now I'm losing weight, and inches, but my waist has gone from 27" to 28".

PS - I'm VERY pear shaped... if that counts

WHAT GIVES?????