By A Mystery Man Writer
This is a Superhero Underwear Set! There are 9 panties and 4 bras to match the panties! They are all recolors and have been tested in game :) Found in TSR Category
ArtStation - The Bat for G8F Underoos
The Sims Resource - Marvel Underwear
Marvel Boys' Avengers 100% Cotton Briefs with Assorted Hero Prints Including Iron Man, Hulk, Thor & More in Size 4, 6 & 8, 8-Pack: Clothing, Shoes & Jewelry
Jintor69 Hero Base Kit costumes tights zipped and unzipped - Clothing - LoversLab
The Sims 4 Simtimates Collection Kit DLC - PC EA app
The Sims Resource - underwear set panties and bra
The Sims Resource - [M] College Style Underwear
The Sims Resource - Superhero Underwear Set
The Sims 4's new free patch adds hearing aids, binders, and more - Polygon