Why would my boss say this?

[Anonymous]

I wear office clothes, trousers and blouse, as I work in the office at a store, whereas everyone else where's a t-shirt with the logo on.

We have a new starter in the office and the boss said "when we get the new starter do you want to wear t-shirts too? Or just the way you are? So you don't have to think of what to wear everyday"

He said there was nothing wrong with what I wear. But why would he suggest it?

Updates:

[abw121290]

It’s hard to say, honestly. Is there a different dress code for those working in the front of the store vs those working in the back? Maybe he was checking in to see if you knew that you were allowed to wear a t-shirt. Anyway, I wouldn’t worry too much about it, and you should wear whatever makes you comfortable, as long as it is work appropriate and within the company guidelines.