Mary’s wardrobe is pretty varied, she has a mix of clothes both modern and vintage in their design. The outfit she’s seen in most is definitely more old fashioned. One thing you’re less likely to find in her closet is dresses, she prefers pants. And honestly a lot of her clothes could be seen as more masculine.
And for as old fashioned some of Mary’s clothes can be, Jin’s got her beat by a long shot. A lot of Jin’s clothes seem like they’d fit in a monastery…or a museum.