Key Points
- UGG footwear generally runs large - most customers recommend sizing down 0.5-1 full size from your usual shoe size for the best fit.
- Real customer reviews consistently advise "size down one size" especially for classic UGG boots that stretch over time with wear.
- Parallel's AI technology helps find your perfect UGG size by matching you with similar body measurements and personalized recommendations.
📣 Need help finding your size? Check out our updated UGG sizing guide for the most up-to-date fit reviews. 🎯
Shopping for UGGs? One of the biggest questions shoppers have before buying is: Do UGGs run small, large, or true to size? To help you find the perfect fit, we've gathered real customer feedback from Parallel—where shoppers review how their UGG footwear fits in real life. Whether you're eyeing the classic sheepskin boots, stylish slippers, or trendy platform styles, we're breaking down what actual UGG wearers have to say about sizing—so you can shop with confidence.

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Find My SizeHow Parallel Users Describe UGG's Fit
We've compiled the data from Parallel creators on how they describe the fit of their UGG clothing, here are the results:

Reviews from Parallel Creators

”Very comfortable, although no arch support, very warm, curved platform heel. Propels forward when walks - OBSESSED. I'm a 7.5/8 usually, but always size down with Uggs, they stretch”

”Size down one size !”

”i sized down, love these boots they are so comfortable”
Disclaimer: The sizing information above is based on average customer feedback and may vary for individual items. Be mindful of different fits, such as slim, oversized, or relaxed styles, as these can affect how a garment fits and looks. In short, UGG's footwear generally run large, many Parallel creators recommend sizing down 0.5-1 size from what you usually buy.

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Find My SizeFinding Your Size on Parallel
AI MEASUREMENT TECHNOLOGY
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Match to people with similar body measurements. We call them your "Parallels". See how clothes look and fit on your Parallels. Discover what brands and sizes they bought and shop directly from their posts knowing the clothing will fit you.

SIZE RECOMMENDER
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Frequently Asked Questions
Do UGGs run true to size or should I size differently?
UGGs typically run large, so most customers recommend sizing down 0.5 to 1 full size from your regular shoe size. This is especially true for classic sheepskin boots that tend to stretch with wear.
Why do people recommend sizing down in UGGs?
UGG boots are made with sheepskin that naturally stretches and molds to your foot over time. Starting with a snugger fit ensures they won't become too loose after breaking them in.
How can I find the right UGG size using Parallel?
Parallel uses AI measurement technology to create precise body measurements from two photos, then matches you with similar users who have purchased UGGs to see real fit feedback and size recommendations.
Are all UGG styles sized the same way?
While most UGG footwear runs large, sizing can vary between different styles like classic boots, slippers, and platform shoes. It's best to check specific reviews for each style you're considering.
What do actual UGG customers say about comfort and fit?
Real customer reviews highlight that UGGs are very comfortable and warm, though they note limited arch support. The curved platform heel in some styles creates a forward-propelling walking motion that many customers love.