UGG boots run big. It is important to buy a whole or half size smaller but it mainly depends on your foot width . So if you are an 8 or 1/2 and a medium width then buy an 8. Also if you are a 9 narrow then buy an 8.

What size Ugg boots should I get?

UGGs generally fit true to size. However, you want your new UGGs to be snug. Overtime the inner with begin to flatten and mould to your foot making them a little roomier, so your fresh UGGs need to be tight to the foot to account for this.

How do I know my size in UGGs?

Measure the circumference around your head, keeping the tape level and firm across the temples and above the eyebrow ridges. Determine your hat or cap size using the size chart. If between sizes, select the next size up.