Observation went well until they saw my tattoo

My first observation was super good last month. They all like me a lot, today I had my second observation and I was told I did amazing. It wasn’t until an hour ago (already 8pm) I got a call from my university supervisor saying I had to cover up my tattoo. I have two tiny tattoos one of a flower one of the sun. It’s not a huge deal but it’s just so dumb, it made me breakdown and I’m not even sure why I’m taking this so hard. It’s just so dumb and doesn’t affect my teaching at all? They only told me to over one up, they are both in very out of sight places not in your face at all so she didn’t even see my other one. I’m just annoyed, I guess this is more of a rant. What’s more annoying is that I asked the vice principal and she said it was fine but apparently my supervisor asked the principal and they said I had to cover it so again I’m just annoyed.