Find your
perfect fit
All our measurements to help you pick the piece that fits you just right. Measurements in inches, taken flat on the garment.
Adult size guide
Bra
Band + cup size
| Size | XS | S | M | L | XL | 2XL | 3XL |
|---|---|---|---|---|---|---|---|
| Cup sizes | 30B 32A 32B |
32C 32D 34B 34C 34D |
34DD 36B 36C 36D |
36DD 38B 38C 38D |
36DDD 38DD 38E 39B 39C |
38DDD 40D 40DD 40E 42C 42D |
40DDD 42DD 42E 44D 44DD 44E |
Camisole
Bust
| Size | XS | S | M | L | XL | 2XL | 3XL |
|---|---|---|---|---|---|---|---|
| Bust | 25 | 26 | 27.5 | 29 | 31 | 33 | 35 |
Panty
Pant size + hips
| Size | XS | S | M | L | XL | 2XL | 3XL |
|---|---|---|---|---|---|---|---|
| Pant size | 0–2 | 2–4 | 5–8 | 9–12 | 13–15 | 16 | 17–18 |
| Hips | 34–36 | 36–39 | 39–42 | 42–43 | 44 | 48 | 51 |
Boxer
Waist
| Size | XS | S | M | L | XL | 2XL | 3XL |
|---|---|---|---|---|---|---|---|
| Pant size | 26–28 | 28–30 | 31–33 | 34–36 | 37–38 | 39–40 | 41–43 |
Unisex Long Tee
Bust + length
| Size | XS | S | M | L | XL | 2XL | 3XL |
|---|---|---|---|---|---|---|---|
| Bust | 40 | 42 | 44 | 46 | 49 | 51 | 52 |
| Length | 28 | 28.5 | 29 | 29.5 | 30 | 30.5 | 31 |
Crewneck
Bust + length + sleeves
| Size | XS | S | M | L | XL | 2XL | 3XL |
|---|---|---|---|---|---|---|---|
| Bust | 40 | 42 | 44 | 46 | 47 | 48 | 49 |
| Length | 25 | 25 | 26 | 27 | 28 | 29 | 29.5 |
| Sleeves | 30.5 | 31 | 32 | 33 | 33.5 | 34 | 35 |
Jogger
Waist + hips + inseam
| Size | XS | S | M | L | XL | 2XL | 3XL |
|---|---|---|---|---|---|---|---|
| Waist | 34 | 36 | 38 | 39 | 40 | 44 | 46 |
| Hips | 44 | 45 | 47 | 50 | 51 | 52 | 54 |
| Inseam | 39 | 40 | 41 | 41.5 | 42 | 43 | 44 |
Pajama Top
Bust + length
| Size | XS | S | M | L | XL | 2XL | 3XL |
|---|---|---|---|---|---|---|---|
| Bust | 37 | 38.5 | 41 | 42.5 | 45 | 50 | 54 |
| Length | 25 | 25.5 | 26 | 26.5 | 27 | 28 | 29 |
Pajama Shorts
Waist + inseam
| Size | XS | S | M | L | XL | 2XL | 3XL |
|---|---|---|---|---|---|---|---|
| Waist | 22–33 | 25–35 | 27–37 | 29–39 | 32–42 | 35–45 | 38–48 |
| Inseam | 12.5 | 13.5 | 14 | 14.5 | 15 | 16 | 17 |
Pajama Crop Top
Bust + length
| Size | XS | S | M | L | XL | 2XL | 3XL |
|---|---|---|---|---|---|---|---|
| Bust | 39.5 | 41.5 | 43.5 | 45.5 | 48.5 | 51.5 | 54.5 |
| Length | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
Pajama Pants
Waist + inseam
| Size | XS | S | M | L | XL | 2XL | 3XL |
|---|---|---|---|---|---|---|---|
| Waist | 22–32 | 24–34 | 26–36 | 28–38 | 31–41 | 34–44 | 37–47 |
| Inseam | 38 | 38.5 | 39 | 39.5 | 40.5 | 41 | 41.5 |
Onesie
Bust + hips + length
| Size | XS | S | M | L | XL | 2XL | 3XL |
|---|---|---|---|---|---|---|---|
| Bust | 32 | 34 | 36 | 38 | 40 | 43 | 46 |
| Hips | 33 | 35 | 37 | 39 | 41 | 44 | 48 |
| Length | 51 | 53 | 55 | 57 | 58 | 59 | 61 |
Kids size guide
Baby Onesie
Total length
| Measurement | 0–3M | 3–6M | 6–9M | 9–12M | 12–18M | 18M | 24M |
|---|---|---|---|---|---|---|---|
| Length | 19.5–21.5 | 21.5–22.5 | 22.5–24.5 | 24.5–26.5 | 26.5–28.5 | 28.5–30.5 | 30.5–32 |
Kids Long Tee
Length + bust + shoulders
| Measurement | 2–3T | 4–5T | 6–7 | 8–9 | 10–11 |
|---|---|---|---|---|---|
| Length | 17.7 | 18.5 | 19.3 | 20.9 | 22 |
| Bust | 29.9 | 31.5 | 33 | 35.4 | 37 |
| Shoulders | 13.8 | 14.6 | 15.3 | 16.1 | 16.9 |
Long Sleeve Top
Length + waist + shoulders
| Measurement | 2T | 3T | 4T | 5T | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|
| Length | 13.8 | 14.6 | 15.3 | 16.1 | 17.3 | 18.5 | 19.7 | 21.3 | 22.5 |
| Waist | 21.3 | 22.8 | 24.4 | 26 | 27.6 | 29.1 | 30.7 | 32.3 | 33.8 |
| Shoulders | 10.6 | 11 | 11.4 | 11.8 | 12.6 | 13.4 | 14.2 | 15 | 15.7 |
Pants
Waist + inseam
| Measurement | 2T | 3T | 4T | 5T | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|
| Waist | 17.3 | 18.1 | 19.7 | 21.2 | 22.8 | 24.4 | 26 | 29.5 | 31 |
| Inseam | 20.5 | 21.2 | 22 | 22.8 | 24.4 | 26 | 27.5 | 27.6 | 29.1 |
How to take your measurements
How to take your measurements
Grab a soft measuring tape and keep it flat against your body — not too tight, not too loose. You can wear your underwear or something close-fitting.
Bust
Measure around the fullest part of your bust, keeping the tape level all the way around.
Waist
Measure around the narrowest part of your torso, usually just above your belly button.
Hips
Measure around the widest part of your hips, about 8 inches below your waist.
Inseam
Measure from the crotch down to the floor, along the inside of your leg. Best for joggers and pants.
A few tips for picking your size
- Between two sizes? We recommend going up for extra comfort — especially on fitted pieces.
- For Long Tees, the cut is intentionally oversized. Take your usual size for the intended look, or size down for something closer to the body.
- Measure at the end of the day, when your body is at its widest, for more realistic numbers.
- Still have questions? Write to us at info@popunderwear.com — we're here to help.