For me, even mirrors will tell different stories of what's going on from mirror to mirror. I have magic mirrors in my bedroom and my son's bedroom. In these mirrors, I look amazing in everything. My bathroom mirror is pretty neutral. She doesn't want to mess with me, especially first thing in the morning. But that darned car mirror will call me out in the worst way every time.
Sometimes I make the mistake of glancing in the rearview mirror and look hideous. Therefore, I feel hideous and carry myself almost apologetically. But when I get home, and look in a magic mirror, I'm fly again and mad that I didn't carry myself like it.
I'm convinced it has everything to do with lighting. Same with my camera pics. Whether the flash is on or off makes a difference. But, I also I think my camera just wants me to tickle that "click" button because, I can take a ton of pics with the same settings and lighting and they all look crazy. But, if I hang on long enough, and my camera is satisfied, I get a good pic with no changes made. Hey, I feel used but, I get a good pic out of the deal so...