Mustard Skinny Pants with Sequins and Buttons. Anything with sequins is big this season perhaps because shiny and sparkly things are uplifting and fun. The sequins provide a subtle accent on the pockets of these mustard jeans. Mustard is earthy, serene, and perfect for chilling out on a cool day. The skinny fit is figure-flattering, making you look taller and slimmer. Because the fabric is made from 97% Cotton and 3% Elastane, the jeans are stretchy, body-hugging, and will retain their shape. The model is 5 9 with measurements of 32-23-35 and is wearing a size small. The fit runs true to size.