Before transitioning I was always conscious of being much older than the others present. But living as a male I was comparing myself to other males. I also never felt like I fit in when I was in a male only group when the Testosterone was flowing.
Now that I am living as a female and have a puberty level of Estrogen in my system I feel much younger and look younger also. I find myself comfortable in any mixed group of people since I can be my real self.