Christ alive. Is this helpful to the OP? Have you read any of her updates?
Assuming not, she’s been through a bruising divorce and has drifted slightly from a group of friends to whom she was previously close. She’s unhappy with her appearance at the moment, feels that she has no good news to share and has lost touch with her former vivacious, popular fun self. Poor bloody OP. I feel for her. Could happen to any of us.
But, and this comes from a place of kindness, she has to start digging herself out of her slough of despond because nobody is going to do it for her.
She’s had good advice from other posters who suggest that she goes anyway and reconnects. It can only be a good thing for her social life and sense of self.
Telling her that her friends, who let’s not forget have asked for her company at this event, even if they have done so quite late, ‘don’t see her as worth socialising with’ or are ‘not close friends she can depend on’ is no help at all. Maybe after the party some of them will become close friends again. The OP needs more social outlets, not fewer.
OP, like a PP I’d go to the party with you if I could! Please go. Try to remember how you were at your best and think of some light, fun conversation topics. Even flipping Love Island or Jerry Hall divorcing Rupert Murdoch, who cares!