Category:Sexy Santa Dress

Quoting from All The Tropes:

A sexy dress designed to make it clear it's to be worn for Christmas time. The outfit is usually red, and trimmed with either fur (real or fake) or with feathers. The exact form of the dress can vary:

• Usually it's a mini dress.
• Sometimes it's a sexy top and short skirt (in order to Bare Your Midriff).
• Sometimes it's a sexy top and hot pants (again for midriff baring).
• Sometimes it will be a leotard shaped outfit.

Considered Fetish Fuel by many, and therefore shows will often have a Mall Santa with one or more ladies wearing this, whether or not it happens in Real Life.

Side-Story Bonus Art in Anime and Manga often has holiday pics with female characters wearing these dresses.

While it's hard to tell for sure how old this trope is, it's unlikely to have been around before the days of Ziegfeld.