CBBE AssUp
⚪ Last updated 2023⚠️ Install Order · 3 steps
Install in this order, then this mod last — most mods fail to load without their framework and dependencies in place.
Preview

🔍 Analysis
- 👍 3.1% endorsement rate — high engagement, a strong quality signal
- 🏆 #47 of 101 Body, Face, and Hair mods in this game by downloads
📋 About This Mod
This mod includes a modified "Waist Height" slider for the CBBE body. Now this slider will rise the full butt, along with the hips and the crotch area. The upper part of the butt will look rounder and fuller, and the legs will also look slightly longer.
This mod especially improves presets focused on a natural body shape. Presets with large or unrealistic proportions may require tweaks.
Included OutfitStudio reference.
Requirements
-
[]CBBE
[
]BodySlideHow to use this mod
Simply select "CBBE AssUp" in BodySlide, adjust the "Waist Height" slider and build it.
Why to use this mod
Regardless of the body, skeleton, physics and animations you use, the ass always looks a bit squashed towards the lower hip area due to the body rig of the game. There is a lack of meat on the upper part of the butt (sorry, I'm not native english and I'm not sure how this sounds...). This mod fills that gap (ahem).
Included 3BBB version as an optional file. 3BBB Physics is required to use this version.
- · -Take a look at the result in game. Don't forget to come back here and endorse if you like the mod. And of course remember to endorse CBBE, BodySlide and Outfit Studio and 3BBB Physics.
Another comparison:
How to convert an outfit to use the AssUp slider
Select the outfit in BodySlide.
Press the icon next to the outfit name to open the outfit in OutfitStudio.
Open menu "File" and select "Load Reference".
Select reference from template "CBBE AssUp" (or "CBBE 3BBB AssUp").
Check merge zaps but uncheck merge sliders.
Open menu "Slider" and select "Conform All". Press OK.
Open menu "File" and select "Save Project As".
Add a custom "display name" for your modified outfit.
"Slider set file", "Shape data folder" and "Shape data file": Remove all text here and simply type same custom name.
If your outfit had a body mesh, check "Copy reference shape into outfit". Otherwise, uncheck this box.
Press OK. Done!
Close OutfitStudio and close BodySlide. Open BodySlide again, select your custom outfit, adjust the "Waist Height" slider and build it.
>> Notes: Some outfits may need additional tweaks. Anyway only tight clothes and almost-naked outfits may require this, it probably wouldn't be noticeable in baggy clothes.
A compact body mod for CBBE that adjusts the waist slider to create a rounder and fuller posterior. With 231 endorsements and 7,427 downloads, it's a niche but popular tweak for players seeking a specific aesthetic change.
✨ Key Features
📊 Pros & Cons
✅ Pros
- Community-approved with 231 endorsements and over 7,400 downloads
- Simple tweak that does exactly what it says—no bloat
- Lightweight and easy to install
⚠️ Cons
- Only affects the waist slider, so it won't change other body parts
- May conflict with other body mods that alter the same slider
- Not updated since 2023, so compatibility with newer game versions is uncertain
For Skyrim players who use CBBE and want a curvier backside without overhauling the whole body. Skip if you're looking for a full body replacer or don't use CBBE.
💡 Beginner Tips
- Make sure you have CBBE installed first, as this mod is a slider tweak for that body.
- Use a mod manager like Vortex or MO2 to easily toggle this mod on and off if you want to compare.
- If you use other body mods, check load order to ensure this tweak applies correctly.
📊 Mod Details
- Game
- Fallout 4 Mods
- Author
- Cthorthu
- Version
- 2
- Downloads
- 7,427
- Endorsements
- 231
- Category
- Body, Face, and Hair
- Created
- 5/18/2023
- Updated
- 5/21/2023
🔧 How to Install Fallout 4 Mods
Download from Nexus.
📖 Full step-by-step install guide for Fallout 4 →
Visit the official mod page for specific installation instructions for this mod.
🎮 Need cheat codes or console commands? Check ur gaming wiki for Fallout 4 commands, item IDs, and more.
Keep browsing — more Fallout 4 mods await