Skins Switching Between Players on Multiplayer Realms

I am playing on my realm when I realize i'm using my friend's skin. when I edit my skin my skin is normal but then my friend's skin is my skin. and it keeps going back and forth between the skins. Oddly sometimes it differentiates between clients and sometimes I see on my screen completely normal skins while my friend sees me as his skin.

In The image (if it does not show then it is in attachments) I am supposed to be the purple skin and my friend, SusurrAnobek, who was also experiencing this, is supposed to be the red skin (sorry for large image, I was using snipping tool)