I am a size 10. SIL is a size 20-22.
All she does when we see her is go on about my size and weight, and it is starting to really piss me off. After I'd had each of the DCs she kept making jokes about me still looking pregnant and asked me how I was going to lose the weight.
I exercise regularly, but she does things such as make suggestions for classes I could go to, or celebrity workout DVDs I could do, because "wouldn't it be lovely to have a figure like her". She also goes on a lot about mutual friends' figures and saying how slim and attractive they are. SIL herself does no exercise at all.
She always has a disapproving air about her when she looks at me, and can never give me a compliment. She always says things in sort of caring tone, as if she is being kind in suggesting ways that I can improve myself.
AIBU to be pissed off with her?