He just had it beforehand. It could’ve been part of his suit

Where did Joseph get a tommy gun?

Or how did Jotaro get a drink when he fought against D'arby?

It's Murica who knows

Where did jotaro get his hat

It's his hair bud

No its his hat

He took it off once during the geb fight

And terence darby

???

@Bruhslayer1000 No, he just took off a removable part of his hair.

His hat is a slightly different color than his hair in p3