Wardrobe Wednesday Mustard Skirt Tori Watson Skirt in Mustard Yellow with Front Button Row 31 Best Mustard & yellow skirts ideas outfits, style, fashion What To Wear With Mustard Yellow Skirt at Leslie Welch blog NWT Mustard Yellow Skirt with Pleated Details Linen Mustard Yellow Midi Skirt With Light Brown Hidden Wooden Buttons. This mustard yellow skirt is defined by a vertical line of brown buttons running down the center. It has a fixed waistband and two small pockets at the front. The warm yellow shade provides a bold and uniform appearance. The straight lines and traditional details offer a simple and functional form.