Korean streetwear brand Human Potential has been featured pretty often in 2NE1 MVs and performances. Minji in particular wears their leggings all the time:
Seen in: Fire MV, various performances
Where to buy: If you’re in Seoul, Human Potential have a store in Apgujung, but their online store conveniently accepts international orders. :) The models worn by Minji (White Snake, Stamp, Yellow Line, White Tire, etc.) are sold out for the most part, but there’s similar stuff available.
Price: ￦35,000-40,000 ($30-35 USD)
Pictures:
