I have to say, mumsnet never fails to surprise me. In the few weeks I have been here, I have learned that neither family, partners nor friends are allowed to comment on a person's wellbeing or appearance without risking being cut out of said person's life. I mean, if the people clostest to us cannot criticise us, then who can? We don't know what's been going on and believe me, most people don't tell others they've let themselves go without good reason. It's far more bitchy doing that behind a person's back.
OP, it depends on how you feel about it all. Do you think this was entirely unjustified or do you think they may have had a point?
I know I've let myself go a bit over the last 2 years and have taken simple steps to make small changes with big effects. Revamped old clothes, thrown out the really tatty ones and bought one or two items to update my wardrobe. Dug out shawls for a quick-fix 'done-up' solution with every outfit. Straightened my mess of a hair so I looked less frazzled. Gone back to using contacts. Lost a bit of weight.
The thing is, we can easily forget ourselves over our kids and it will eventually affect our confidence in ourselves. A bit of self-care and attention does our own moods a whole lot of difference, even subconsciously you often carry yourself differently when you know you have made a bit of an effort.
Just because they may have chosen their words wrong doesn't mean they meant to be unkind. Before you consider cutting them out. I really wish people knew how to disagree more and hope it's entirely a mn thing.