Bubble Butt

Best for beginners. Describe what you want in a chat and the picture comes back, no learning curve.

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Created by

DavidDick

on Civitai

by DavidDick - Bubble Butt

Creator notes

This model was trained on the best "bubble butt" images I could find. 35 training images @ 10,000 steps were used. I couldn't find a similar lora for Flux Klein so I just made one myself. IMO, many of the bubble butt loras for other models give you a result that is cartoonishly large and unnatural. To me, bubble butt is not necessarily about the overall size, but about roundness and depth. You can have small hips and small thighs, but so long as the ass is very round with a lot of depth, that's a bubble butt. Obviously this is all subjective and simply one dude's opinion. Seems to have trouble occasionally with aspect ratios other than 2:3. I plan to make improvements to it in the future. If you'd like to help me pay for runpod costs, feel free to leave a tip:

Trigger words

bubble butt

1,953 downloads · 106 likes on Civitai

SHA256

86C7FD9AB0137EF00B724CD999AAE6335FBA071DD5D19EF1FBE04DD933440846

Bubble Butt Popularity Trend

Heat score since 23 May 2026

Heat score

8,204°

This week

▲

0.4%

8,205° then, 8,204° now

This month

▲

2.2%

8,207° then, 8,204° now

Past year

n/a

Wasn't released/tracked

7,000°

Floor

The scale runs from 0° to 9,999°. Everything below 7,000° is kept for models no source reports on yet, which carry a stand-in number there so lists stay complete. 7,000° is where measured data begins: a model with real data but almost no downloads sits at the floor, and the measurements fill the degrees above it. The floor says nothing about the model; only the degrees above it do, and they are what separates one model from another.

+1,003°

Civitai downloads

1,953 downloads of this exact version on Civitai. Downloads are the heaviest ingredient and are counted on a log scale: ten times the downloads adds the same 300°, so a model with a million downloads is not a thousand times hotter than one with a thousand. The six download sources share that one term, split between them in proportion to their counts.

+304°

Likes

106 likes and thumbs up across the sources. A like weighs half a download, on the same log scale.

+43°

Adoption rate

About 3 downloads a day, measured between two readings of the sources, never guessed from a lifetime average. Speed weighs a quarter of the download term, so a fresh surge shows without letting a one-day spike outrank years of use.

−146°

Age

−146° because the Flux2 weights came out in 2025. Every model inherits the age of the weights it is built on: 150° a year, up to 750°, and it keeps growing until then. Without it the top of the list would be 2022 and 2023 checkpoints on the strength of downloads that had years to pile up.

Show detailed breakdown

Every number on this site can be checked. This model's heat score is 8,204°, and here it is built one ingredient at a time, with the running total after each: the floor, the degrees each source adds, the bonus for the kind of model and what the age of its weights takes away. The colors are the bands of the chart above. The glossary at the end defines every term.

1
Start at the floor.
Why 7,000° and not zero: the scale runs from 0° to 9,999°, and the part below 7,000° is reserved for models no source reports on yet, which carry a stand-in number there so the lists stay complete and never outrank a model with data. 7,000° is where measured data begins. A model with real data but almost no downloads sits here; everything that follows is measurement, and the room above the floor holds ten tenfold steps in downloads at 300° each. The floor is the same for every model, so it decides nothing; the degrees above it do.
7,000°
running total
2
Add the downloads.
1,953 download-equivalents in all, from Civitai downloads. Ten times the downloads adds the same 300°, so size matters but never runs away with the score.
+1,003°
8,003°
running total
3
Add the likes.
106 likes and thumbs up, at half the weight of a download.
+304°
8,307°
running total
4
Add the adoption rate.
About 3 downloads a day right now, measured between two readings, at a quarter of the weight.
+43°
8,350°
running total
5
Take off the age.
The Flux2 weights came out in 2025: 150° a year, up to 750°, growing until then.
−146°
8,204°
running total
=
The heat score.
Where this model stands on every list of this site. Nothing else adjusts it.
8,204°

Glossary: the terms used here

Heat score: One number for how much a model is used and wanted right now, from 0° to 9,999°. Every list on this site that says hottest is sorted by it and nothing else.
Floor: The 7,000° every model with real data starts from. The scale runs from 0° to 9,999°; the part below the floor is reserved for stand-ins (models without data), so that a model with data always ranks above one without. The floor is the same for everyone and decides nothing; the degrees above it are the measurement.
Download-equivalents: Everything the score treats as a download, added up: downloads themselves, each torrent seeder as 1,000, each AI Horde image and each run on a generation site as one.
Log scale: Counting by tens, not by ones: going from 1,000 to 10,000 downloads adds the same degrees as going from 10,000 to 100,000. It keeps giants from crowding out everything else.
Likes: Thumbs up and likes from every source, worth half a download each on the log scale.
Adoption rate: How many downloads a day a model gets right now, from the difference between two readings of a source. A quarter of the weight of the download term.
Measured and estimated: Measured means two readings of a source exist and the difference is real. Estimated means only today's total is known and the past is spread over the model's life; the site says which one it is showing.
Seeder: Someone who keeps a copy of the weights online for others to download over a torrent, or a hosted mirror doing the same. Each one counts as 1,000 downloads.
AI Horde: A volunteer network that generates images for free on donated computers. The number of images it has made with a model is public, and each counts as one download.
Generation sites: Sites that host their own copies of a model and let people generate with it, such as PixAI, SeaArt and Yodayo. Their downloads count like Civitai's and each generation run as one download.
OpenRouter tokens: A text model served through an API, such as Claude or GPT, has no weights to download, so its usage is measured in tokens: the pieces of text it read and wrote through OpenRouter, a gateway many apps use, over the last 30 days. Every 10,000,000 tokens count as one download. Source: OpenRouter (openrouter.ai/rankings), CC BY 4.0.
Full model (checkpoint): The weights themselves, the file that generates on its own. It gets a bonus because add-ons depend on it.
LoRA and embedding: Small add-on files that steer someone else's weights toward a style, a character or a concept. They cannot run alone.
Family and weights: The base a model is built on, such as SD 1.5, SDXL, Flux or Wan. Every model inherits the release date of its family's weights.
Age: Degrees taken off for how long ago the family's weights came out: 150° a year, up to 750°. It keeps old downloads that had years to pile up from freezing the top of the list.
Family boost: A small, bounded nudge for LoRAs of a family this site is pushing forward right now, always listed in the breakdown.
Stand-in score: A stable number below the floor given to a model no source reports on yet, so lists stay complete. It never ranks above a model with data.
New! (grace period): A model less than 7 days old shows New! instead of a score and holds no place in the rankings. Its score is computed from day one, but a model one day old grows faster than anything, so without the wait the week's #1 would always be whatever came out yesterday rather than what held up for a week.
Trend: How a model's growth over a period compares with the typical model's growth over the same period. Faster than typical reads as a rise, slower as a fall.
Typical model: The middle of the catalog: half the models with a figure grew faster over the period, half slower.

How this model's popularity has moved against the rest of the catalog: its growth in downloads, likes and usage over each period, measured against the typical model's growth over the same period, with its heat score at the time. Above the typical growth reads as a rise, below it as a fall. The past is reconstructed from today's totals, the model's first day and its measured download speed where two readings exist; a model that did not exist at the start of a period shows n/a.

Example renders

NSFW

Prompts and settings shared by the people who made these renders on Civitai. Pick a render to see how it was made.

Get this prompt

Settings

Sampler

DPM++ 2S a

Steps

Guidance

Seed

425829886

Size

832x1216

Prompt

A realistic photo of a skinny woman in her late 20s. She has long wavy blonde hair. She is standing in a kitchen and bending over cleaning a counter top. She is wearing a long sleeve black shirt and light yellow yoga pants with a bubble butt. <segment:face,0.4,0.5> cute woman face

Settings

Sampler

DPM++ 2S a

Steps

Guidance

Seed

675177158

Size

832x1216

Prompt

An amateur candid photo of a skinny woman in her late 20s. The woman has long brunette hair and light makeup. She is standing in a forest. She is wearing a maroon crop top and grey leggings with a bubble butt. <segment:face,0.4,0.5> cute woman face

Settings

Sampler

DPM++ 2S a

Steps

Guidance

Seed

2028184335

Size

832x1216

Prompt

A realistic photo of a skinny woman in her late 20s. She has long red blonde hair. She is walking on a campus sidewalk outdoors. She is wearing a light pink flannel shirt and a backpack and black leggings with a bubble butt. She is facing away from the camera

Settings

Sampler

DPM++ 2S a

Steps

Guidance

Seed

1031578506

Size

832x1216

Prompt

A realistic photo of a skinny woman in her late 20s. She is standing in a kitchen. The woman has long wavy blonde hair and light makeup. She is reaching up with one hand to grab something from an open cabinet. She is wearing a light pink flannel shirt and light blue jeans with a bubble butt <segment:face,0.4,0.5> cute woman face

Settings

Sampler

DPM++ 2S a

Steps

Guidance

Seed

1426524935

Size

832x1216

Prompt

An amateur photo of two women in their late 20s. Their skin is pale and wet. Both girls have their hands on the other girl's butt cheek. One has long blonde hair and the other has curly brunette hair. They are standing on a beach at sunset with people visible in the background. One is wearing a light blue frills bikini and the other is wearing a skimpy string pink bikini. They both have a bubble butt. They are looking at each other. Ass focus. Hand touching butt. Both girls have their mouths closed <segment:left girl face,0.4,0.5> gorgeous woman face

Settings

Sampler

DPM++ 2S a

Steps

Guidance

Seed

2071683276

Size

832x1216

Prompt

An amateur candid photo of a skinny woman in her late 20s. She is standing in a kitchen. The woman has long brunette hair and light makeup. She is taking a mirror selfie in a modern bathroom and looking over her shoulder. She is wearing a white T shirt and a skimpy green thong with a bubble butt. Her skin is sweaty <segment:face,0.4,0.5> cute woman face

Settings

Sampler

DPM++ 2S a

Steps

Guidance

Seed

155793243

Size

832x1216

Prompt

A realistic photo of a skinny woman in her late 20s. She is standing in an indoor gymnasium. The woman has a blonde ponytail and light makeup. Her skin is pale and sweaty. She is wearing a skimpy light blue gymnastics one piece thong leotard with a bubble butt. Ass focus <segment:face,0.4,0.5> cute woman face

How to install a LoRA: folders, file checks and first use in ComfyUI, Forge, Automatic1111 and Draw Things

Settings

Sampler

DPM++ 2S a

Steps

Guidance

Seed

1537606960

Size

832x1216

Prompt

A realistic photo of a skinny woman in her late 20s. She has long wavy blonde hair. She is standing in a bedroom and taking a selfie. She is wearing a pink T shirt with exposed midriff and her naked bubble butt is exposed. Ass focus.

Run Locally

How to install

Sep 24, 2025

Open Civitai Download

BubbleButt.safetensors

316 MB · SafeTensor

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