Virtual try-on

FastFit

Tries on several items at once: top, bottom, shoes, bag. Faster than earlier models thanks to caching. Non-commercial license.

Developer
LavieAI and Sun Yat-sen University, China
First release
Jul 2025
Latest release
Jul 2025
Sizes
based on SD 1.5 inpainting
License
Non-commercial onlyFastFit Non-Commercial License (commercial use under agreement with LavieAI)
Running
On your own serverNeeds a GPU
Industries
Retail and marketplaces
Deploy on your server Hugging Face GitHub

What it does

  • Building an outfit from several products on one model
  • "Build a look" pilot on a website
  • Lookbook prototypes without a shoot

Where it is used

Online apparel and footwear retailMarketplacesFashion brands

Hardware requirements

LaptopLaptop or regular PC, up to 8 GB of VRAM — smaller versions
no versions
1 GPUOne GPU with 16–80 GB — mid-size versions
fits
ClusterServer with several GPUs — flagship versions
no versions

Versions

  1. FastFit-SR и FastFit-MR (1024)

How to run it

On your own serverWeights are downloaded from Hugging Face and served with vLLM (load and API) or llama.cpp (modest hardware). The model then runs in a closed network with no per-request fees.Hugging Face
How much hardware you needCalculate the VRAM for the model size, context length and number of concurrent requests.Open the hardware calculator

I can set this up end to end: pick the model size, deploy it on your server and connect it to your systems.

Frequently asked questions

Can FastFit be used in a commercial project?

No. License: FastFit Non-Commercial License (commercial use under agreement with LavieAI). A commercial product needs a different model or a separate agreement with the rights holder.

What hardware does FastFit need?

At minimum: One GPU with 16–80 GB — mid-size versions. Without a GPU the model is not practical. You can calculate the exact VRAM for your model size and context in the hardware calculator.

Does FastFit support Russian?

Language does not matter for this model: it does not work with text.

Where can I download FastFit and what does it cost?

The FastFit weights are open and free to download. You only pay for the hardware it runs on and for the setup. Source links are at the bottom of this page.

How I deploy it for clients

  1. SelectionI pick the model size for your task and hardware and test it on your examples.
  2. DeploymentI deploy it on your server or in a closed network and provide an API.
  3. Fine-tuningI fine-tune it on your data (LoRA) or connect a knowledge base — whichever is cheaper for the task.
  4. IntegrationI connect it to your CRM, ERP, bot, website or team chat and set up monitoring.

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Details

Source: github.com/Zheng-Chong/FastFit. Data checked against the model card on 22 Sep 2026. Have a lawyer review the license before commercial launch.