The term REGAL OUTFIT can be solved by the crossword solution ROBE, which is a four letter word. A ROBE is a type of clothing that is typically worn for formal occasions or as a sign of status. It is usually long and flowing, and often made of luxurious fabrics such as velvet or silk. In the past, robes were worn by royalty and other members of the upper class to signify their wealth and power. Today, robes are still seen as a symbol of luxury and sophistication, and are often worn for special occasions such as weddings or proms.