Last I checked, it was not 1993, this was not spirit week at my high school, and a coffee shop was not your house.
For these reasons, I should not see you wearing pyjamas.
It's not like I expect you to wear a jacket and tie. But I would prefer actual pants. This is not a high bar.
And definitely don't pair pyjama pants with a flannel shirt, or I'm going to go get all my sister's old Nirvana albums and start pelting you with them.