Aritzia vs Uniqlo

How the sizing compares

Uniqlo outerwear pieces run larger than Aritzia — about 1.5cm more room at the same letter size. If you wear, say, a medium at Aritzia, you'll likely want to size down at Uniqlo.

Size conversion

outerwear · chest
AritziaUniqlo
XS · 85.75cmXS · 84cm
S · 92cmS · 92cm
M · 98.25cmM · 100cm
L · 105.35cmL · 108cm
XL · 113cmXL · 116cm
XXL · 120.65cmXXL · 124cm

Uniqlo outerwear pieces run larger than Aritzia — about 1.5cm more room at the same letter size. If you wear, say, a medium at Aritzia, you'll likely want to size down at Uniqlo.

tops · chest
AritziaUniqlo
XXS · 78cmXXS · 76.5cm
XS · 82.75cmXS · 81.5cm
S · 87.75cmS · 86.5cm
M · 92.75cmM · 91.5cm
L · 99.25cmXL · 101.5cm
XL · 104.75cmXXL · 106.5cm
XXL · 112.25cmXXXL · 112cm

Uniqlo tops run smaller than Aritzia — about 2.4cm tighter at the same letter size. If you wear a medium at Aritzia, consider sizing up at Uniqlo.

dresses · chest
AritziaUniqlo
XXS · 78cmXXS · 76.5cm
XS · 82.75cmXS · 81.5cm
S · 87.75cmS · 86.5cm
M · 92.75cmM · 91.5cm
L · 99.25cmXL · 101.5cm
XL · 104.75cmXXL · 106.5cm
XXL · 112.25cmXXXL · 112cm

Uniqlo dresses run smaller than Aritzia — about 2.4cm tighter at the same letter size. If you wear a medium at Aritzia, consider sizing up at Uniqlo.

bottoms · waist
AritziaUniqlo
XXS · 57.5cmXXS · 57.25cm
XS · 62.25cmXS · 62cm
S · 67.25cmS · 67.5cm
M · 72.25cmM · 72.25cm
L · 78.75cmXL · 81cm
XL · 87cmXXL · 86cm
XXL · 95.25cmXXXL · 91cm

Uniqlo bottoms run smaller than Aritzia — about 2.6cm tighter at the same letter size. If you wear a medium at Aritzia, consider sizing up at Uniqlo.

Mapped on the primary measurement from each brand's real size chart — a starting point. For a read tuned to your full proportions, build your size on either brand below.

Aritzia vs Uniqlo — common questions

Is Aritzia sized like Uniqlo?

Uniqlo outerwear pieces run larger than Aritzia — about 1.5cm more room at the same letter size. If you wear, say, a medium at Aritzia, you'll likely want to size down at Uniqlo.

Does Aritzia run bigger than Uniqlo?

No — Uniqlo runs the bigger of the two. At the same letter size Uniqlo gives roughly 2cm more room, so you'd size down moving from Aritzia to Uniqlo.

If I wear a medium in Aritzia, what size am I in Uniqlo?

A medium in Aritzia maps closest to size M in Uniqlo on their outerwear chart (98.25cm vs 100cm on the primary measurement). It's a starting point — build your exact size for a read tuned to your full proportions.

Full Aritzia sizing guide →Full Uniqlo sizing guide →