with a T-shirt

I have got a question about the preposition in the sentence below. Is "with" the correct preposition? I think it might lead to misunderstanding.
It was so hot that I could go walking with a T-shirt.

English4everyone said:

I think it might lead to misunderstanding.

Click to expand...

It might indeed. use 'in'.

Thanks.
And can we use "in" for shoes / sandals as well?
For example, I was in a hurry so I had to follow them in sandals.

English4everyone said:

Thanks.
And can we use "in" for shoes / sandals as well?
For example, I was in a hurry so I had to follow them in sandals.

Click to expand...

Yes.

If it's really hot ,you go without the t-shirt.

Not if you're female and avoiding arrest.

It was so nice here on Sunday that I went for a walk, and ended up taking off my sweatshirt and walking in just my t-shirt (on top, of course - I was also fully clothed and shod from the waist down). For November, to just be in short-sleeves was amazing.

Illogically, we also use "in bare feet" in the US. "I can't believe you ran out there in just your bare feet." Or "You can't come in here in your bare feet. Put some shoes on."

Do you use barefoot in AmE? We say in bare feet, but we could also use barefoot.

Yes.

You can't come in here ...

barefoot; in bare feet; with nothing on your feet; with no shoes on.

Poor English learners.
Why not "On your bare feet"? Why not "You are barefeet"? After all, we don't walk IN our feet, we walk ON them. And both our feet are bare, not just one.

But that's the way it is!

I suppose that's a bit like "He's six foot tall/He's six feet tall" - how can they both be correct? But hey...this kind of madness keeps me in a job!