Royal Twin Mice, Little Sister and Brother in Matchbox Maileg Royal Twin Little Sister and Brother Mouse in Box My Sweet Muffin Maileg Royal Twins in Matchbox Conscious Craft Royal twin mice, Little sister and brother in matchbox Royal Twins Mice, Little Sister & Brother in a box Linen Alley. The royal twin mice is a set of a small princess and prince. They wear golden crowns and beautiful clothes. They sleep in a lovely decorated matchbox with a picture of themselves on the front. Inside the box you find the softest beddings.