This happened to me too yesterday ( 1/11/2018) I thought I was going crazy. I have never changed my avatar outfit. I am team Mystic, so my avatar has been decked out all in blue... All of a sudden she was wearing all yellow and had on red gloves. I signed out, then back in again and all was back to normal! Very strange...
GamePress
Outfit changed on it's own
I clicked on my avatar and was very surprised to see the clothes were changed. I didn't do anything. How can this be possible ? Did it happen to any of you ? I'm like 99.9% positive I didn't do anything but i don't know maybe I blacked out at some point (remaining 0.1%) Can this be a bug of some sort ? Can someone else have acces to my account without me knowing ?
My most logical explanation is that it happened while my phone was in my pocket with pokemon go turned on and the movements of me walking clicked some buttons. I once accidentally bought a raid pass like that but it seems much more difficult to change clothes that way...