A "jeans shirt" refers to a type of shirt made from denim fabric, which is the same material used to make jeans. It means a shirt that has the same texture and style as jeans, but in a shirt form.
Sentences with «jeans shirt»
Super cute how you paired it with a blue jean shirt. (aikocunanan.com)
This time I opted for a super cozy burgundy (or plum) sweater and a dark denim jean shirt underneath. (poshscene.com)
Of course, I do have jeans shirts in my closet and I am planning to add more shirts, but I really don't know when I will wear everything, LOL! (fashiongum.com)