“I'm a size 8.5 and I'm trying to decide if I go with an 8 or 9... I'm a 7.5 but I got a 7 and after like 2-3 days... they are stretching so I wouldn't size up.” TikTok · elysemor · 2 years ago Quick Reference Comparison
“Initially, they felt a bit snug straight out of the box... After a few months of wear, the lining flattened, making them a little more roomy and fitting true to size.” YouTube · Wearably Weird
Buying UGGs can be tricky because their signature sheepskin lining compresses and "molds" to your feet over time. Most experts and users agree that while they generally fit true to size (TTS), you should aim for a fit right out of the box . Standard Fit by Category buying uggs size guide
These run true to size but will feel tight initially. Within 10–20 hours of wear, the lining packs down, effectively increasing the space inside by about half a size .
Individual experiences with "true to size" often vary based on whether users wear socks. “I'm a size 8
Some reviewers find these slightly more snug in the toe box than the standard Classics. Slippers (Tasman, Coquette): Usually true to size . Models like the Go to product viewer dialog for this item. or Go to product viewer dialog for this item.
These materials don't stretch like sheepskin. Order your regular shoe size; if you're a half-size, size up . Strategic Sizing Tips Half Sizes: UGG boots typically only come in whole sizes. After a few months of wear, the lining
may run small, so you might consider sizing up for these specific styles.