What do you think about me wanting to tell my wife she's weird because she won't get changed in front of me?
Your wife is still shy about changing in front of you?
Because it's a mean thing to say. I am simply not used to it.
That is weird and I am wondering why she's like that. Did you say anything about her weight?
Yeah I did but that won't matter when she's just weird. I'm saying this because I love her.
Making comments about your wife's weight is clearly a reason that she would not want to undress or dress in front of you. She likely feels that you would be mean or judgemental. It's best that you apologize for past comments and compliment your wife's appearance if you want her to feel comfortable.