As someone who works directly with activewear OEM factories and personally owns multiple Lululemon leggings, bras, and tops, I’ve tested how each fabric and fit behaves. One of the most common questions I hear from shoppers and brand clients is:
“Does Lululemon run small?”
Here is a clear, beginner-friendly explanation based on real product experience and production knowledge.
Table of Contents
- Quick Answer
- 1. Does Lululemon Actually Run Small?
- 2. Why Some People Feel Lululemon Runs Small
- 3. Lululemon Sizing by Category
- 4. Size Conversion Guide
- 5. Which Size Should You Choose? (Real Recommendations)
- 6. Lululemon vs Competitor Fit Comparison
- FAQs
- Related Links
Quick Answer
Lululemon is mostly true to size, but some pieces feel tighter because of compression fabrics like Luxtreme or Everlux.
Soft fabrics like Nulu (Align) feel more forgiving and stretchy.
If you're between sizes, many people size up in:
- high-compression leggings
- medium/high-support bras
External references:
- Lululemon Official: https://shop.lululemon.com
- Size Guide: https://shop.lululemon.com/help/size-chart
1. Does Lululemon Actually Run Small?
Based on my own fit tests and my experience supporting activewear brands:
✔ Most products → True to size
✔ Compression fabrics → Feel tighter
✔ Soft/Studio fabrics → Feel stretchy
✔ Sports bras → Often feel small

Lululemon’s patterns are not inaccurate — the performance fit creates the impression of running small.
2. Why Some People Feel Lululemon Runs Small
1) High-Compression Fabrics
Luxtreme and Everlux are engineered to feel tight for support.
These intentionally hug the body more than casual leggings.
2) Athletic Performance Fit
Running and training pieces use closer-fitting patterns.
3) Firm Bra Elastic
Sports bras often fit snug across the chest and back.
4) Fabric Density Differences
- Nulu = soft, stretchy, ultra forgiving
- Luxtreme = dense, stable, tight
- Everlux = supportive, warm-fit compression
OEM Insight:
Fit differences come from fiber blend, gauge density, and stretch recovery, not bad sizing.
3. Lululemon Sizing by Category
Leggings Fit Overview
| Fabric | Feel | Fit Notes |
|---|---|---|
| Nulu (Align) | Soft, stretchy | True to size |
| Nulux | Sleek, cool | Slightly snug |
| Luxtreme | Dense, compressive | Some size up |
| Everlux | Very supportive | Often feels small |
Sports Bras
- High support → usually size up
- Light support → true to size
Tops & Tanks
- “Slim Fit” → fitted
- “Classic Fit” → regular
- “Relaxed Fit” → loose
Most people stay true to size.
Men’s
- ABC pants → true to size
- Compression tops → fitted
- Metal Vent Tech → athletic fit
4. Size Conversion Guide
| Lululemon Size | US Size | Notes |
|---|---|---|
| 2 | XXS | Very fitted |
| 4 | XS | Best for Align |
| 6 | S | True for most |
| 8 | M | Bras may feel snug |
| 10 | L | Comfort fit |
| 12 | XL | Consistent |
| 14 | XXL | Available in select styles |

5. Which Size Should You Choose? (Real Recommendations)
✔ If you want comfort
Choose your usual size in:
- Align (Nulu)
- Classic/Relaxed tops
✔ If you want performance & support
Stay true to size for:
- Running tights
- Training tights
✔ If between sizes
Size up in:
- Luxtreme leggings
- Everlux leggings
- Medium/high-support bras
✔ If you prefer a looser look
Choose “Relaxed” or size up one.
Internal Link
Want Lululemon-level fabric and fit for your own clothing line?
👉 https://fukigymwear.com
6. Lululemon vs Competitor Fit Comparison
| Brand | Fit Tendency | Notes |
|---|---|---|
| Lululemon | True to size; compressive styles snug | Fabric engineering affects fit |
| Athleta | More forgiving | Inclusive sizing |
| Gymshark | Runs small | Trend-focused fit |
| Alo Yoga | Slim fit | Less technical compression |
| Nike | True to size | More sport-focused |
FAQs
Q1: Do Lululemon leggings stretch out?
Nulu (Align) stretches slightly with wear; Luxtreme and Everlux do not.
Q2: Should I size up in Lululemon sports bras?
If you prefer comfort — yes. For firm support — stay true to size.
Q3: Are Lululemon sizes consistent across all items?
Mostly yes, but compression fabrics always feel tighter.
Related Links
- Official Size Guide: https://shop.lululemon.com/help/size-chart
- Lululemon Women’s Collection: https://shop.lululemon.com/c/women/_/N-8t5
- Premium Activewear Manufacturing: https://fukigymwear.com
