You can request the length alteration when placing an online order, or use their in-store service. You can also take in previously purchased UNIQLO trousers (as long as they’re clean) with your receipt/invoice and they’ll shorten them for you. I completely forgot about this and had mine done elsewhere! 🤦‍♀️ I wear and xs in the trousers and a small in the cardigan x LTKuk LTKspring