Judy Blue denim is very stretchy, so most styles fit best when you size down one from your usual department store size. This guide walks you through how to find your size, how to measure, and what to expect from inseam lengths. Every product page also lists sizing specific to that style, and our denim is tried on by real women across regular and curvy sizes, so you can order with confidence.
The quick rule: size down one
Because Judy Blue denim is very stretchy, most shoppers size down one from their true department store size for most styles. If you have a curvier shape with wider hips, you may prefer to stay true to your department store size for a roomier fit. Check our specific details for each specific style.

New to boutique denim sizing?
Boutique denim uses odd sizes. Your true odd size is simply one number down from your true even size. For example, if you are a women's 10, your true odd size is a 9. That is the same size, not a size down. From your true odd size, you then follow the size-down-one advice above.
Size recommendations
Regular sizes (0 to 15/16)
- Size 0 buys 0 (relaxed fit)
- Size 1/2 buys 0
- Size 3/4 buys 1/2
- Size 5/6 buys 3/4
- Size 7/8 buys 5/6
- Size 9/10 buys 7/8
- Size 11/12 buys 9/10
- Size 13/14 buys 11/12
- Size 15/16 buys 13/14
Curvy sizes (14W to 24W)
- Size 14W buys 15/16
- Size 16W buys 14W
- Size 18W buys 16W
- Size 20W buys 18W
- Size 22W buys 20W
- Size 24W buys 22W
- Size 26W buys 24W
How to measure
Waist: measure around your natural waistline, keeping the tape comfortably loose.
Hips: measure around the fullest part of your hips.
Inseam: measure along the inside leg, from the crotch seam to the bottom hem.
Inseam and length
Most Judy Blue styles come in a single inseam, so length is worth checking on each product page, where we list the actual inseam. Some styles, like our Judy Blue Cali bootcut, come in short, regular, and long inseams so you can skip the tailor. If you are petite and love a style that runs long, our advice is simple: buy it and hem it.
Judy Blue size chart
0/24 · 1/25 · 3/26 · 5/27 · 7/28 · 9/29 · 11/30 · 13/31 · 15/32 · 14W · 16W · 18W · 20W · 22W · 24W
Still not sure?
Every product description includes sizing recommendations and our model's size for reference. If you are between sizes, join our daily live sales for real-time help, often on our curvy model, and check the per-style fit clips in our app. Ready to shop? Browse the full Judy Blue collection or start with our hero Cali tummy control bootcut.
More denim guides
Keep reading: our guide to the best jeans for your body type and our honest take on whether Judy Blue jeans are worth it.
Frequently asked questions
Do Judy Blue jeans run big or small?
Neither. Judy Blue denim is very stretchy, so most styles wear best a size down from your usual department store size rather than running large. Always follow the per-style recommendation on the product page.
What size should curvy shoppers order?
Curvy sizes 14W to 24W generally size down one, then follow the size guide. If you carry wider hips, you may prefer to stay true to your department store size for a roomier fit.
How do I know the length will work?
We list the actual inseam on every product page and sort styles by length. Styles offered in multiple inseams, like the Cali bootcut, make it easy to match your height.