I'm not. I never tell my mother what she should or shouldn't wear.
My kids did tell me how bad and unfashionable I am. I got razzed for YEARS for wearing the slouchy 80s socks and finally bought some low-cut socks. Thinking about how pleased the kids would be that I had left the 80s (after years of hearing crap about it), I put on a pair and waited. Couldn't wait to impress and have my fashionable sock choice accepted!

The first one came in and I showed him my cool new socks. He said...
"
Do you think that makes you cool? Because you're not cool."
...and that was the end of my attempts to be fashionable. I'm not cool. I'm old. I will continue to wear my nylons and my mom pants. I don't need to be a fashionista. I did that 20 years ago.

And I have told the kids as much and told them I don't want to hear their opinions on my clothes.
If it works for your family, that's great. I'm sure it is all done in fun and you all enjoy it - I can see where that would work. But I don't need my kids telling me what to wear or that I look bad...and I wouldn't do it to my mom. Different strokes for different folks.