Lululemon Size Guide 2026 — Women's Numeric Sizes to EU
Lululemon uses numeric sizes 0–20 for women and runs small. Complete size chart converting Lululemon 0-20 to EU, UK and US. Includes guidance by product line: Align, Wunder Under, Fast and Free.
Lululemon's numeric sizing (0 through 20) confuses first-time buyers, and the small fit adds another layer: the number on the label doesn't tell you much without context. Their compressive fabrics also fit differently from their relaxed styles. This guide maps every Lululemon size to EU equivalents and tells you what to expect from each product line.
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Lululemon runs small
Lululemon sizes run approximately 1 size smaller than standard EU. If you normally wear EU 40 (M), try Lululemon size 10 (EU 40) but expect it to fit like a EU 38. When in doubt, size up.
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Women's numeric size chart
Lululemon 0 ≈ EU 32. Size 2 ≈ EU 34. Size 4 ≈ EU 36. Size 6 ≈ EU 36-38. Size 8 ≈ EU 38. Size 10 ≈ EU 40. Size 12 ≈ EU 40-42. Size 14 ≈ EU 42-44. Size 16 ≈ EU 44. Size 18 ≈ EU 46. Size 20 ≈ EU 48.
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Size by product line
Align Legging (Nulu fabric): fits true to size — soft and non-compressive. Wunder Under & Fast and Free (compressive fabrics): size up one. Scuba hoodies and jackets: size up one for the fitted Define Jacket; true to size for Scuba.
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Measure hips for leggings
For leggings and shorts, measure your hips at the widest point (about 8 inches below your natural waist). Find that hip measurement in the size chart. If hip and waist fall into different sizes, always choose the larger size.