A Santa Claus-themed outfit. This involves prominent use of red fabric with white trim on the edges. As such, many types of clothing can be used in this style - swimsuits, undergarments, outerwear etc. A wide, black belt may be present.
Use the Santa hat tag when the majority of a character's clothing is not Santa-themed, except for the hat.
Images with Santa Claus himself should be tagged Santa Claus.
