Installing a body mod is easy, but conflicts are brutal. Follow these rules:

For those who want a more specialized look, these community-favorite mods and creators offer high-quality "androgynous" or "feminine" options for masculine frames: Androgynous Male Presets - Patreon

To understand why you need this mod, you must understand the "Frame Toggle." In CAS, you can choose Masculine or Feminine frames . The masculine frame has locked geometry:

Feminine male body mods replace the mesh (the 3D wireframe) of the masculine body with a custom shape that blends male anatomy with feminine proportions.

Back up your Documents/Electronic Arts/The Sims 4/Mods folder. Step 2: Download the mod (e.g., Dumbaby Femboy Body). Extract the .package file from the ZIP. Step 3: Place it directly in your Mods folder (no more than one subfolder deep). Step 4: In Sims 4 Game Options > Other , ensure Enable Custom Content and Mods AND Script Mods Allowed are checked. Step 5: Restart the game. Enter CAS. Select a Masculine frame Sim. Step 6: Look at the body shape presets (the drop-down next to the muscle/fat sliders). The new body should appear as a new icon (e.g., "Femboy 1").