It cleans up your CAS menu by modifying the base game asset instead of adding duplicate thumbnails.

The default undergarments provided in The Sims 4 base game have long been a point of contention for players who value realism, fashion, and customization. The standard male underwear is often criticized for its outdated textures, baggy fit, and lack of modern style. Fortunately, the vibrant Custom Content (CC) community has stepped in to provide "default replacements"—mods that automatically swap out the game's original underwear assets with high-quality, modern alternatives.

: All townies and randomly generated non-playable characters (NPCs) will automatically wear this new underwear.

Installing default replacements requires precise file organization. Because you can only have male default underwear mesh active at a time, keeping your folders clean is crucial.

This occurs when a default replacement file is corrupted, missing a mesh, or conflicting with another mod. Double-check that you do not have two replacement files active.

The standard male underwear in The Sims 4 leaves much to be desired. The textures are flat, the models are baggy, and frankly, they lack the realism that many modern players seek in 2025.

Installing a default replacement is similar to adding standard CC, but requires strict adherence to the . Re: Really annoying clothing glitch | EA Forums - 9271723

By installing a default replacement, you upgrade every male Sim in every save file—from your legacy founder to that random townie jogging past your lot—without having to manually edit anyone.

If you care about immersion, CAS diversity, or just want your male Sims to look like they live in the 21st century, install a default underwear replacement immediately. It’s a set-it-and-forget-it mod that you’ll appreciate every time your Sim changes clothes. Just pick a reputable creator, back up your saves, and enjoy the upgrade.

There are countless creators in the Sims 4 community (often found on sites like The Sims Resource or Tumblr) who create high-quality default replacements. Here are some key types to look for: