Your yoga pants size comes from measuring your waist and hips against the specific brand’s chart — not the tag on your jeans.
A medium from one label can fit like a large from another; that gap causes most bad orders. The fix: with a soft tape measure, get your waist and hip numbers, then check them against the chart on the exact product page. This guide covers measuring, two real published charts, and fit checks that catch a wrong size before you wear the pants.
How Do You Measure For Yoga Pants?
Measure the narrowest part of your waist and the fullest part of your hips, standing naturally, tape horizontal and snug but not tight. Record both in inches for US charts.
Nike notes the natural waist sits roughly where your body bends side to side. lululemon’s guide has you stand with feet hip-width apart and run the tape around the widest part of the buttocks and hips; inseam is measured from the crotch seam to the ankle bone with legs straight.
- Measure over underwear or light clothing, not jeans or a bulky sweatshirt.
- Keep the tape level — a tape that dips at the back reads short.
- Measure twice; if readings differ by more than half an inch, remeasure.
- Write the numbers down; ordering from memory causes wrong sizes.
Yoga Pants Sizing: What The Real Charts Show
Brands publish different bands under the same letters, so a medium isn’t portable. Compare Nike’s and lululemon’s US ranges:
| Size | Nike Waist / Hip (in) | lululemon Waist / Hip (in) |
|---|---|---|
| XS | 23.5–26 / 33–35.5 | 24–25 / 34–35 |
| S | 26–29 / 35.5–38.5 | 26–27 / 36–37 |
| M | 29–31.5 / 38.5–41 | 28–29 / 38–39 |
| L | 31.5–34.5 / 41–44 | 30–31.5 / 40–41.5 |
| XL | 34.5–38.5 / 44–47 | 33–35 / 43–45 |
| 1X | 43–45.5 / 51–54 | 39–41 / 47–49 |
| 2X | 45.5–49 / 54–57 | 43–45 / 51–53 |
A 29-inch waist lands at the top of a lululemon medium and the bottom of a Nike medium — why the product-page chart wins. Nike’s chart also overlaps across categories (XL and 0X share waist territory), so letters never transfer cleanly. Nike’s women’s bottoms size chart publishes the full alpha-to-numeric table.
lululemon’s general alpha chart can differ from a single style’s chart: the Align High-Rise Pant 25″ runs on numeric sizing 0 to 20. Open the chart on the page for your exact pants every time.
How Should Yoga Pants Fit When You Try Them On?
A correct size holds the waistband steady through a squat and a sit without digging, rolling down, or turning sheer at the seat. Judge fit in motion, not standing still in a mirror.
- Squat deep and check the waistband stays put.
- Lunge and lift a knee toward your chest; fabric should move with you, not pull at the crotch.
- Sit on the floor and lean forward; horizontal strain lines across the hips mean too small.
- Check the seat in good light for transparency — thin spots show under tension, not at rest.
Sagging fabric, a sliding band, or bunching at the back means too large a size or the wrong rise. For length issues, switch to the brand’s short or tall inseam instead of sizing up or down — that trades a good waist for bad ankles.
If you straddle two sizes, weigh the hip number more heavily; a waistband is forgiving, but a tight seat shows through every bend. Sizing down for a “compression” feel can restrict movement, add pressure points, and turn fabric see-through.
Once measured, our roundup of the best yoga pants for moms saves chart-hunting across trusted styles.
Common Questions
Should I size up or down in yoga pants?
Size to your larger measurement, usually the hips. If your hips sit at the top of one size and your waist at the bottom of the next, take the hip size. Going down risks restricted movement and sheer fabric.
Why is my usual clothing size wrong for yoga pants?
Charts list body measurements, not garment measurements, and brands set bands independently. Nike and lululemon assign different ranges to the same letters. Your jeans size is a starting point at best — confirm against the product chart.
Where do I find the right size chart for a specific style?
Use the size guide on that exact product page, not the retailer’s general chart. Single styles can carry their own numbering — lululemon’s Align High-Rise Pant 25″ uses numeric sizes 0 to 20. Also confirm you’re on the US storefront.
Sources
- Nike. “Women’s Bottoms Size Chart” Source for Nike’s US alpha-to-numeric waist and hip ranges.
- lululemon. “Fit Guide and Size Charts” Source for lululemon’s body-measurement method and published size bands.
- lululemon. “Align High-Rise Pant 25″ Size Guide” Shows a product-specific numeric chart that differs from the general alpha guide.