CivArchive
    hyperbreasts - v6
    NSFW
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    A model for large breasted waifus or semi-realistic characters.

    V6 Changelog 2023/06/03:

    • Considering this was my first and most popular LoRA, I figured it was time to improve on it. Probably the last version too. Hyperfusion is more or less the successor to this.

    • Less harmful to the overall style, but slightly smaller sizes overall, feels like a good balance

    • Wider variety of breast shapes in the dataset

      • Some breast shape tags were added, but hard to say how helpful they are

    • Uses LoRA LoCon, but does not require any additional extensions to run

    • Changed "large breasts" to "big breasts" to match my hyperfusion model tags

    • The model prefers resolutions around 640, but can do up to 768 to a degree

    • Training tags attached under model download section

    V5 Changelog:

    • v5 now uses LoRA!

    • What changed since v4? I trained a breast size classifier to auto label the dataset which resulted in better control over breast size, and made it easier to generate larger sizes.

    • Note that the trigger words in v5 are ordered in the following from smallest size to largest:
      breasts, large breasts, huge breasts, gigantic breasts

    V4 Info:

    the keyword for v4 remains hyperbreasts, if you want better control over the size use v5

    Notes:

    I used this to train my image tagging classifiers for breast sizes
    https://github.com/huggingface/transformers/tree/main/examples/pytorch/image-classification

    Description

    • Added some more variety in breast shapes to the dataset

    • Less harmful to the overall style than v5

    Training Details:

    • 2k images

    • 16 epocs

    • learning rate 2e-4

    • text encoder LR 5e-5

    • base model Av3

    • clip skip 2

    • random flip

    • tag drop chance 0.1

    • bucketing at 768

    • dim 16

    • alpha 8

    • 150 tokens

    • cosine with restarts

    • training with tags, tags attached next to model download

    • Kohya LoRA LoCon, does not require any additional extensions to use

    FAQ

    Comments (43)

    klikkeri1Jun 4, 2023· 1 reaction
    CivitAI

    How you trained a "breast size classifier"? Can you link a Youtube video or an article that explains similar process?

    throwawayjm
    Author
    Jun 4, 2023

    I used this, it's pretty straight forward, and similar to SD training in some ways
    https://github.com/huggingface/transformers/tree/main/examples/pytorch/image-classification

    I don't know of any guides, but you can try looking around.

    klikkeri1Jun 5, 2023

    Thanks dude!

    EricHuanggle1001Jun 4, 2023
    CivitAI

    v6 is infinitely better than v5, might actually be able to use it now

    throwawayjm
    Author
    Jun 5, 2023

    Nice!

    BlurmaticoJun 7, 2023· 2 reactions
    CivitAI

    such a funny lora

    1844286Jun 12, 2023· 1 reaction
    CivitAI

    do you have any prompts that work with this for consistent results or its it just the ones featured in the images above?

    throwawayjm
    Author
    Jun 12, 2023

    Consistency is always hard, but if you are aiming for a specific body shape, I would refer to r-34. Find a similar image there, and try using the same tags. That's the best way to explore.

    sneedoJun 19, 2023· 4 reactions
    CivitAI

    Bro I've tried all your models and they LITERALLY don't do anything, ever

    throwawayjm
    Author
    Jun 19, 2023· 1 reaction

    Double check you are loading the LoRA correctly. Everyone else seems to be working fine.

    SerenityXJun 22, 2023

    I have every version of every LoRa installed, with the exception of Lacto... Every one of them works perfectly for me, generating images frequently... 🤔

    More than happy to offer guidance, if you give me info on your software/hardware/prompting..?

    midobatsuJun 24, 2023

    was there not a bug with the latest stable diffusion update that made loras not work?

    throwawayjm
    Author
    Jun 24, 2023

    @midobatsu Good point, some LoRA's were broken in 1.0 an 1.1 of A1111. Before and after that is fine.

    goblinmarketJul 30, 2023

    For anyone else having this problem, put it in your LYCORIS folder, then it started working for me.

    throwawayjm
    Author
    Jul 30, 2023

    @goblinmarket The latest A1111 (1.5+) unifies all LoRA, so upgrading should work too

    CrucioJun 20, 2023· 1 reaction
    CivitAI

    Any tips for getting less of a large gap between the breasts? They looking good but I'm getting a lot of sternum lol

    throwawayjm
    Author
    Jun 20, 2023· 1 reaction

    Does increasing the weight of `cleavage` help? Otherwise `breasts apart` in the negative with high enough weight might make a difference too, but I'm only making an educated guess.

    EldritcheternityJul 17, 2023· 1 reaction
    CivitAI

    So, as best I can tell the ai system I am using is reading the trigger words as separate tokens, thus not triggering the LoRA. I’m not really sure how to fix this.

    throwawayjm
    Author
    Jul 17, 2023· 1 reaction

    Yea, the trigger words should be broken up by the tokenizer into separate tokens. Try one of the prompts in the images provided, if you still don't see it working it's likely the LoRA is not loading correctly.

    EldritcheternityJul 18, 2023

    @throwawayjm Yeah, it’s still not working for me. I’m not sure but it could be because I’m using the drawthings app to run my prompts, but I have no idea. I wouldn’t know how to fix the load, so this is probably beyond me for now. Still, thanks for the response. It looks great, hopefully I can figure out how to get it working in the future.

    nsfwpersonalaiJul 18, 2023· 9 reactions
    CivitAI

    Hyper pussies please

    goodlotionAug 3, 2023· 3 reactions
    CivitAI

    nice one

    waifuliberatorAug 5, 2023· 3 reactions
    CivitAI

    Vital resource!

    CorbeAug 24, 2023· 2 reactions
    CivitAI

    Any idea how to fix the weird nipples on this LORA? I'm getting a lot of inverted nipples and some that look downright infected! Other than that, it's amazing (with some trial and error)

    throwawayjm
    Author
    Aug 24, 2023

    Nipples have been hard to correct. Kinda like the hands problem. Using this LoRA below :1> strength probably makes the issue worse too. I guess you just have to get lucky, im not sure how to solve it.

    CorbeAug 29, 2023· 4 reactions

    @throwawayjm There is a lora called real nipples, if you use it and also read this guide https://www.reddit.com/r/StableDiffusion/comments/11u2p0u/lazy_guide_to_photorealistic_images/ you can get them to look pretty good! I use it like this: <lora:REAL-NIPPLES:0.3> perfect nipples

    JayqzeOct 2, 2023· 2 reactions
    CivitAI

    so i use sd 1.4, the recommended ckpt. and the generation data provided but im not getting near the to the result of any of those pictures. what besides that needs to be done to get to the examples? im new to sd so theres surely something im missing but i have no clue what it is :(

    throwawayjm
    Author
    Oct 3, 2023

    You just need this text somehwere in your prompt <lora:hyperbreasts_v6:1>, and make sure the LoRA file is in "/models/Lora" if you are using Automatic1111.

    jagvill42Oct 11, 2023· 5 reactions
    CivitAI

    can i give an advice? If you want to use this LoRA for fully clothed characters, i recommend to combine this LoRA with rulles's Cutesy style for softer faces, and it works perfect, adding "<lora:Cutesy4-10:1> <lora:hyperbreasts_v6:1.3>" in the prompt, and "(off breasts:2), (cleavage:2)" in the negative prompt.

    MoyuTheMedicOct 30, 2023· 2 reactions
    CivitAI

    It has been months since you released v6 and I still can not get it to do anything I have even found and fixed some problems making all other loras work better but this one and only this one refuses to work on v6. I am going to redownload it again and give it one last try but man this will be like my 3rd or 4th time.

    throwawayjm
    Author
    Oct 30, 2023· 1 reaction

    Usually the fix is upgrading Automatic1111 to a version above 1.2. Some older versions failed to load certain types of LoRAs.

    MoyuTheMedicOct 31, 2023· 1 reaction

    @throwawayjm thankfully it did manage to work this time I can finally start using my favorite lora again

    MrDarkHeartNov 7, 2023· 3 reactions
    CivitAI

    I can't seem to download this at all. It's throwing up a weird error but I think that's on civitai's side and not yours.

    Jax1492Dec 28, 2023· 3 reactions
    CivitAI

    any chance this comes over to sdxl?

    throwawayjm
    Author
    Dec 29, 2023· 1 reaction

    I tried with a few different datasets now. It's just too difficult to bother training right now. I've been waiting for someone to make a successful large dataset non-realistic finetune before venturing into SDXL as proof that it works at scale. It's probably possible to do, but I can make nearly the same finetune at 1024px on sd1.5 so why bother when SDXL is only marginally better.

    loktarDec 31, 2023

    @throwawayjm We know atleast that it is possible. NovelAI v3 is based off sdxl but thats about all we know

    throwawayjm
    Author
    Dec 31, 2023

    @loktar Yea I saw some examples from their new model. Who knows what tricks they used to train it =P

    loktarJan 4, 2024· 1 reaction

    @throwawayjm Probably an H100 supercluster costing hundreds of thousands or millions to rent

    SomebodyOnceToldMehJan 13, 2024· 5 reactions
    CivitAI

    Holy crap, despite the memes about larger-than-life breasts, this lora is unironically the best breast enhancing mod on civit that doesn't strip the character/person's clothes off when making them larger. When used at a lower percent, it just makes them bigger, it's amazing!

    z5418lyMar 27, 2024· 4 reactions
    CivitAI

    can you make the breast size gigantic, please,

    throwawayjm
    Author
    Mar 27, 2024

    Hyperfusion should be able to get bigger sizes. This model is older and less diverse.

    hypernovaextras407Jun 4, 2025
    CivitAI

    this one you made is pretty aight, 8/10

    Kevin0777Dec 24, 2025
    CivitAI

    Can we get this for QWEN?

    LORA
    SD 1.4

    Details

    Downloads
    29,133
    Platform
    CivitAI
    Platform Status
    Available
    Created
    6/3/2023
    Updated
    5/19/2026
    Deleted
    -
    Trigger Words:
    big breasts
    huge breasts
    gigantic breasts

    Available On (2 platforms)

    Same model published on other platforms. May have additional downloads or version variants.