Summer is just around the corner, which means New Yorkers are baring arms — and legs, shoulders and abs. But many young women are also packing a defense for deterring creepy dudes: the subway shirt.

Oversized t-shirts can be traced back to the late 80s and early 90s, when Bollywood fashion was supercharged by the hip-hop culture. From Bollywood heartthrobs to Indian Raps, oversized t-shirts could ...