AITA I, A, '32M' have been friends with K, '32F' since post graduation. None of us has any romantic feelings towards the other. We are close friends with an understanding where we can be blunt and honest about stuff between us without hard feelings. Yesterday we celebrated K's birthday with few of her colleagues, all girls. It was my 1st time meeting anyone from her workplace. She wore exaggerated make up and was behaving strange, like she was forcing herself to be this chatterbox gossip loving person, being loud, and forcing laughter at minor jokes. Even her work friends were exchanging glances on occasion. The whole thing made me uncomfortable. This was a big change in behavior from when we are with our other friends from college or just the 2 of us when she is the quiet, caring, understanding friend. Long story short when we were returning home, it was just the 2 of us. I asked her if she is ok and that acting strange today. And that the makeup style you have today doesn't suit you. And thay way you were behaving doesn't seem like you. Here is where she got angry and said the below in a loud voice "what do you really know about me? Why do you have to comment on my make up or how I behave?" I was kinda taken aback and told her that "she has changed" she said nothing after that and I also went quiet, nothing was said the rest of the way. It's been complete silence between us since then. Can anyone advise me what is going and how do I talk to her again? TLDR: friend yelled at me after party because I thought she wore too much makeup and was behaving differently.