Making a simple matching outfit can be easy, requiring less than a yard of fabric, a solid color t-shirt and some ribbon.
Following my directions here, make a simple skirt with an elastic waistband.
Then, pin the ribbon around the bottom of the skirt, making one or two rows of ribbon to suit your taste. Sew in place.
Next, use the same ribbon to decorate your solid color t-shirt. Pin the ribbon in place around the neckline and sleeves of the t-shirt. Sew in place.
There you have it! A simple matching outfit that you can make in one afternoon.