CivArchive

    Overview

    A female bodies expanding into serious thickness. This model focuses mainly on thigh/hip growth, breast expansion and ass expansion, but can also do other things. Just play around with it.

    There is no trigger; use following descriptions:

    • Her thighs grow (massively)

    • Her breasts grow (massively)

    • Her buttocks grow (massively)

    • Her belly grows

    • Her height increases (dramatically) / her head hits the ceiling (this being replaced by the height growth LoRA)

    • Her clothes rip / tear / shred / tear open / rips across / leaving exposed

    Adding my T2V helper LoRAs will improve the quality and/or growth rate significantly. Also, using the TripleKSampler can greatly improve the animation quality, if you're using speedup LoRAs.

    Further descriptors can enhance the effect. Sometimes it can take a few tries to get it just right. These keywords can also be used in the negative prompt to weaken an effect.

    For more have a look at the example images/videos.

    H3 - V1

    This is an early I2V version so expect better textures, physics, and shapes in the future. Play with the strength; for breasts it seems to work better around 0.7, while for thighs and butts 0.9 works fine.

    • Training model: H3 FL2VA

    • LoRA strength: 0.5-1.0

    • Sampler: euler / res_multistep / res_2s+beta57

    • Steps: 20+

    An amateur video of a woman lying on a bed, sleeping, wearing a tank top and pajama shorts. High angle view from above, framed from her knees up.
    
    Her thighs grow massively, stretching her shorts. She wakes up in shock, looking down at her thick thighs and wide hips.

    LTXV 2.3 Sulphur - V1

    Does work on LTX 2.5 with limitations.

    Intended to be used with a I2V LTX 2.3 10Eros workflow. T2V will yield unpredictable results.

    • Training model: LTX 2.3 Sulphur

    • LoRA strength: 0.5-1.3

    • LoRA strength high-res: 0.15-0.5

    • Sampler: euler

    • CFG: 3.0

    • Steps: 20+

    A candid shot of a woman standing in a bedroom. She's wearing a white bra and panties. She has blonde hair and a petite, slim body.
    
    Her breasts grow, overfilling her bra, forming a deep, spilling cleavage. She breathes heavily. Her tight bra covers her massive breasts, which spill over the top and sides.
    
    She looks at the camera, arms resting at her sides and says panicked and confused: "What did you do to me?"

    WAN 2.2 I2V - V2.9

    • Training model: WAN 2.2 I2V

    • LoRA strength: 0.5-1.0

    • Sampler: euler / euler a

    • Use TripleKSampler with 1/4/4 steps or no lightning LoRAs at all for quality.

    • I highly recommend using my T2V helper LoRAs linked below. Use their low-noise component for improved texture quality or their high-noise for better shapes and bigger expansions.

    A woman in a bra standing in a bedroom. Her breasts grow massively; her breasts become gigantic. Her bra stretches tight. She looks down shocked.

    Description

    FAQ

    Comments (16)

    lushmilkJan 19, 2026· 6 reactions
    CivitAI

    Wow! 🤩 this turned out awesome, great work, glad I could provide some inspiration lol

    cupra
    Author
    Jan 19, 2026· 1 reaction

    Thank you! I love your work. Keep it coming! <3

    Devilday666Jan 19, 2026· 2 reactions
    CivitAI

    Lushmilk inspired?

    cupra
    Author
    Jan 19, 2026

    Yes! As credited in the description :)

    GayLizardSpyJan 21, 2026· 1 reaction
    CivitAI

    This is a lot of fun, thanks.

    cupra
    Author
    Jan 21, 2026

    Thanks a lot!

    AromaticPop76Jan 21, 2026
    CivitAI

    is it possible to grow just their breasts?

    cupra
    Author
    Jan 21, 2026· 1 reaction

    No, not really. This model was mainly trained on hip and thigh expansion.

    If you want pure breast expansion I'd recommend:

    https://civitai.com/models/1918611/breast-expansion-wan-22-i2v

    or

    https://civitai.com/models/2223955/breast-expansion-wan

    cupra
    Author
    Feb 5, 2026

    Try the new version with the TripleKSampler and a negative prompt. Good look! :)

    growthwindJan 23, 2026
    CivitAI

    seems to focus only on female growth, is there any male growth in the training set?

    everyone is getting boobs 😭

    cupra
    Author
    Jan 23, 2026· 1 reaction

    Yeah sorry, I don't have a male dataset. Try https://civitai.com/models/1951971/body-growthexpansion :)

    growthwindJan 24, 2026· 1 reaction

    @cupra thanks for sharing anyways really good on females

    ChahkFeb 5, 2026· 2 reactions

    "everyone is getting boobs"

    Don't threaten me with the good times!

    Galtherok349Jan 23, 2026· 1 reaction
    CivitAI

    Man I just can't get this to work for me locally. I've tried copy pasting the exact prompt from the example and tried different images but they just walk forward while swaying their hips.

    cupra
    Author
    Jan 23, 2026· 1 reaction

    That's odd. I'll update this one soon though, with more control. Maybe that'll work out for you.

    Galtherok349Jan 25, 2026· 1 reaction

    @cupra I look forward to it! The example vids are awesome