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        Club Knix Logo
        Become a Rewards member to earn points and redeem for rewards!
        Earn Points
        1 Point per $1 Spent
        Early Access
        to new drops & sales
        Redeem Rewards
        $10 for every 200 points
        JOIN NOW
        Need Help? Book a Virtual Fitting
        Band (in) Fits Cups Waist (in)
        S 32" A-DD 27"
        S+ 32" E-G 27"
        M 34" A-DD 30"
        M+ 34" E-G 30"
        L 36" A-DD 33"
        L+ 36" E-G 33"
        XL 38" A-DD 38"
        XL+ 38" E-G 38"
        XXL 40" A-DD 43"
        XXL+ 40" E-G 43"
        XXXL 42" A-DD 48"
        XXXL+ 42" E-G 48"

        *Cup ranges from A-G

        Need Help? Book a Virtual Fitting
        Waist (in) Hip (in) Pants
        S 27" 34"-37" 4-6
        S+ 27" 34"-37" 4-6
        M 30" 38"-41" 8-10
        M+ 30" 38"-41" 8-10
        L 33" 42"-44" 12-14
        L+ 33" 42"-44" 12-14
        XL 38" 45"-47" 16-18
        XL+ 38" 45"-47" 16-18
        XXL 43" 48"-50" 18-20
        XXL+ 43" 48"-50" 18-20
        XXXL 48" 51"-53" 22-24
        XXXL+ 48" 51"-53" 22-24
        Need Help? Book a Virtual Fitting
        Bust (in) Waist (in)
        XS 32" 24"
        S 34" 27"
        M 37" 30"
        L 40" 33"
        XL 43" 38"
        XXL 47" 43"
        XXXL 51" 48"
        XXXXL 55" 52"
        Need Help? Book a Virtual Fitting
        Waist (in) Hip (in) Pants
        XS 24" 33" 0-2
        S 27" 37" 4-6
        M 30" 40" 8-10
        L 33" 43" 12-14
        XL 38" 46" 16-18
        XXL 43" 50" 18-20
        XXXL 48" 53" 22-24
        XXXXL 52" 55" 26
        Need Help? Book a Virtual Fitting
        Bust (in) Waist (in) Hip (in)
        XS 32" 24" 33"
        S 34" 27" 37"
        M 37" 30" 40"
        L 40" 33" 43"
        XL 43" 38" 46"
        XXL 47" 43" 50"
        XXXL 51" 48" 53"
        XXXXL 55" 52" 55"
        Need Help? Book a Virtual Fitting
        Bust (in) Waist (in) Hip (in)
        XS/S/M 32"-37" 24"-30" 33"-40"
        L/XL/XXL 40"-47" 33"-43" 43"-50"
        XXXL/XXXXL 51"-55" 48"-52" 53"-55"
        Need Help? Book a Virtual Fitting
        Hip (in) Pant
        XS 30"-33" 00-0
        S 34"-37" 2-4
        M 38"-41" 6-8
        L 42"-44" 10-12
        XL 45"-47" 14-16
        XXL 48"-50" 18-20
        XXXL 51"-53" 22-24
        XXXXL 54"-56" 26
        Need Help? Book a Virtual Fitting
        Hip (in) Pants
        S/M 33-41" 2-10
        L/XL 42-47" 12-18
        XXL/XXXL 51-53" 24-26
        Need Help? Book a Virtual Fitting
        Band (in) Fits Cups
        S 32" A-DD
        S+ 32" E-G
        M 34" A-DD
        M+ 34" E-G
        L 36" A-DD
        L+ 36" E-G
        XL 38" A-DD
        XL+ 38" E-G
        XXL 40" A-DD
        XXL+ 40" E-G
        XXXL 42" A-DD
        XXXL+ 42" E-G

        *Cup ranges from A-G

        Need Help? Book a Virtual Fitting
        Waist (in) Hip (in) Pants
        S 27" 33"-37" 2-6
        S+ 27" 33"-37" 2-6
        M 30" 38"-41" 8-10
        M+ 30" 38"-41" 8-10
        L 33" 42"-44" 12-14
        L+ 33" 42"-44" 12-14
        XL 38" 45"-47" 16-18
        XL+ 38" 45"-47" 16-18
        XXL 43" 48"-50" 20-22
        XXL+ 43" 48"-50" 20-22
        XXXL 48" 51"-53" 24-26
        XXXL+ 48" 51"-53" 24-26

        *If you're larger on the bottom, we recommend you size up

        Need Help? Book a Virtual Fitting
        Band (in) Fits Cups
        S 32" A-DD
        S+ 32" E-G
        M 34" A-DD
        M+ 34" E-G
        L 36" A-DD
        L+ 36" E-G
        XL 38" A-DD
        XL+ 38" E-G
        XXL 40" A-DD
        XXL+ 40" E-G
        XXXL 42" A-DD
        XXXL+ 42" E-G

        *Cup ranges from A-G

        Need Help? Book a Virtual Fitting
        Waist (in) Hip (in) Pants
        S 27" 33"-37" 2-6
        S+ 27" 33"-37" 2-6
        M 30" 38"-41" 8-10
        M+ 30" 38"-41" 8-10
        L 33" 42"-44" 12-14
        L+ 33" 42"-44" 12-14
        XL 38" 45"-47" 16-18
        XL+ 38" 45"-47" 16-18
        XXL 43" 48"-50" 20-22
        XXL+ 43" 48"-50" 20-22
        XXXL 48" 51"-53" 24-26
        XXXL+ 48" 51"-53" 24-26

        *If you're larger on the bottom, we recommend you size up

        Use these band and hip measurements to determine your correct size
        Every size in our bodysuit will fit from an A cup to a G cup (yep, it's true!). If you're larger on the bottom, we recommend you size up.
        Need Help? Book a Virtual Fitting

        Step 1: Measure your Band

        Wearing an unpadded bra, wrap a measuring tape around the top of your ribcage.

        You’re looking for a snug fit - so we recommend tightening on the exhale and noting the smallest measurement in inches.

        Step 2: Measure your Cup

        To find your Cup measurement, wrap the measuring tape around the fullest part of your chest, making sure the measuring tape is parallel to the floor. Relax your shoulders and measure on the inch.

        If your band measures more than 33, when measuring the cup, pull it a little bit snug before measuring.

        Your Results!

        Still have questions? Book a Virtual Fitting with our amazing customer experience team!

        We're still working on your size!

        Still have questions? Book a Virtual Fitting with our amazing customer experience team!

        Need Help? Book a Virtual Fitting
        Waist (in) Hip (in) Pant Size
        XS 24" 30"-33" 0-2
        S 27" 33"-37" 2-6
        M 30" 38"-41" 8-10
        L 33" 42"-44" 12-14
        XL 38" 45"-47" 16-18
        XXL 43" 48"-50" 20-22
        XXXL 48" 51"-53" 24-26
        XXXXL 52" 54"-56" 26
        Need Help? Book a Virtual Fitting
        30 32 34 36 38 40 42 44
        A XS S M L XL XXL XXXL XXXXL
        B XS S M L XL XXL XXXL XXXXL
        C XS S M L XL XXL XXXL XXXXL
        D XS S M L XL XXL XXXL XXXXL
        DD XS S M L XL XXL XXXL XXXXL
        E XS+ S+ M+ L+ XL+ XXL+ XXXL+ XXXXL+
        F XS+ S+ M+ L+ XL+ XXL+ XXXL+ XXXXL+
        G XS+ S+ M+ L+ XL+ XXL+ XXXL+ XXXXL+
        Need Help? Book a Virtual Fitting
        Hip (in) Pant Size
        XS 30"-33" 0-2
        XS+ 30"-33" 0-2
        S 33"-37" 2-6
        S+ 33"-37" 2-6
        M 38"-41" 8-10
        M+ 38"-41" 8-10
        L 42"-44" 12-14
        L+ 42"-44" 12-14
        XL 45"-47" 16-18
        XL+ 45"-47" 16-18
        XXL 48"-50" 20-22
        XXL+ 48"-50" 20-22
        XXXL 51"-53" 24-26
        XXXL+ 51"-53" 24-26
        XXXXL 54"-56" 26
        XXXXL+ 54"-56" 26
        Need Help? Book a Virtual Fitting
        30 32 34 36 38 40 42 44
        A XS S M L XL XXL XXXL XXXXL
        B XS S M L XL XXL XXXL XXXXL
        C XS S M L XL XXL XXXL XXXXL
        D XS S M L XL XXL XXXL XXXXL
        DD XS S M L XL XXL XXXL XXXXL
        E XS S M L XL XXL XXXL XXXXL
        F XS+ S+ M+ L+ XL+ XXL+ XXXL+ XXXXL+
        G XS+ S+ M+ L+ XL+ XXL+ XXXL+ XXXXL+
        Need Help? Book a Virtual Fitting
        Hip (in) Pant Size
        XS 30"-33" 0-2
        XS+ 30"-33" 0-2
        S 33"-37" 2-6
        S+ 33"-37" 2-6
        M 38"-41" 8-10
        M+ 38"-41" 8-10
        L 42"-44" 12-14
        L+ 42"-44" 12-14
        XL 45"-47" 16-18
        XL+ 45"-47" 16-18
        XXL 48"-50" 20-22
        XXL+ 48"-50" 20-22
        XXXL 51"-53" 24-26
        XXXL+ 51"-53" 24-26
        XXXXL 54"-56" 26
        XXXXL+ 54"-56" 26
        Need Help? Book a Virtual Fitting
        30 32 34 36 38 40 42 44
        A XS S M L XL XXL XXXL XXXXL
        B XS S M L XL XXL XXXL XXXXL
        C XS S M L XL XXL XXXL XXXXL
        D XS S M L XL XXL XXXL XXXXL
        DD XS S M L XL XXL XXXL XXXXL
        E XS S M L XL XXL XXXL XXXXL
        Need Help? Book a Virtual Fitting
        Hip (in) Pant Size
        XS 30"-33" 0-2
        XS+ 30"-33" 0-2
        S 33"-37" 2-6
        S+ 33"-37" 2-6
        M 38"-41" 8-10
        M+ 38"-41" 8-10
        L 42"-44" 12-14
        L+ 42"-44" 12-14
        XL 45"-47" 16-18
        XL+ 45"-47" 16-18
        XXL 48"-50" 20-22
        XXL+ 48"-50" 20-22
        XXXL 51"-53" 24-26
        XXXL+ 51"-53" 24-26
        XXXXL 54"-56" 26
        XXXXL+ 54"-56" 26
        Need Help? Book a Virtual Fitting
        28 30 32 34 36 38 40 42 44
        A XS S M L XL XXL XXXL XXXXL
        B XS S M L XL XXL XXXL XXXXL
        C XS S M L XL XXL XXXL XXXXL
        D XS S M L XL XXL XXXL XXXXL
        DD XS S M L XL XXL XXXL XXXXL
        E XS S M L XL XXL XXXL XXXXL
        F XS+ S+ M+ L+ XL+ XXL+ XXXL+ XXXXL+
        G XS+ S+ M+ L+ XL+ XXL+ XXXL+ XXXXL+
        Need Help? Book a Virtual Fitting
        Hip (in) Pant Size
        XS 30"-33" 0-2
        XS+ 30"-33" 0-2
        S 33"-37" 2-6
        S+ 33"-37" 2-6
        M 38"-41" 8-10
        M+ 38"-41" 8-10
        L 42"-44" 12-14
        L+ 42"-44" 12-14
        XL 45"-47" 16-18
        XL+ 45"-47" 16-18
        XXL 48"-50" 20-22
        XXL+ 48"-50" 20-22
        XXXL 51"-53" 24-26
        XXXL+ 51"-53" 24-26
        XXXXL 54"-56" 26
        XXXXL+ 54"-56" 26
        Hip (in)
        XS/S 30"-37"
        M/L 38"-44"
        XL/XXL 45"-50"
        XXXL/XXXXL 51"-56"
        Socks Sizing
        Knix Size Shoe Size
        S/M 6-9
        L/XL 10-11.5
        OS 6-10
        Need Help? Book a Virtual Fitting

        Step 1: Measure your Band

        Wearing an unpadded bra, wrap a measuring tape around the top of your ribcage.

        You’re looking for a snug fit - so we recommend tightening on the exhale and noting the smallest measurement in inches.

        Step 2: Measure your Cup

        To find your Cup measurement, wrap the measuring tape around the fullest part of your chest, making sure the measuring tape is parallel to the floor. Relax your shoulders and measure on the inch.

        If your band measures more than 33, when measuring the cup, pull it a little bit snug before measuring.

        Your Results!

        Still have questions? Book a Virtual Fitting with our amazing customer experience team!

        We're still working on your size!

        Still have questions? Book a Virtual Fitting with our amazing customer experience team!

        32 34 36 38 40 42 44 46 48
        A S S S M M M L L L
        B S S M M M L L L XL
        C S S M M M L L L XL
        D S M M M L L L XL XL
        DD S M M M L L L XL XL
        E M M M L L L XL XL XL
        F M M M L L L XL XL XL
        G M M L L L XL XL XL XL
        Leakproof Pads Sizing
        Cups
        M A-D
        XL DD-G
        Teen Underwear Size Chart
        KT Period Underwear is designed for smaller and growing bodies to fit teens and tweens
        Need Help? Book a Virtual Fitting
        KT Size Hip Kids Pant Size Adult Pant Size
        XXS 25" - 27" 7 ---
        XS 28" - 30" 8 - 10 ---
        S 31" - 34" 12 - 14 00 - 2
        M 35” - 38” 16 - 20 4 - 8
        L 39” - 42” --- 10 - 14
        XL 43” - 46” --- 16 - 18
        XXL 47” - 50” --- 20 - 22
        Find the Perfect Fit

        1. Hip

        Stand with your feet together and measure around the widest part of your hips and bottom. Keep the measuring tape parallel to the floor.
        Age Height (in) Weight (lbs)
        2T 1 1/2-2Y 33"-36" 28-32 lbs
        3T 2-3Y 36"-39" 32-36 lbs
        4T 3-4Y 39"-42" 36-40 lbs
        5T 4-5Y 42"-45" 40-46 lbs
        6T 5-6Y 45"-48" 46-52 lbs
        Need Help? Book a Virtual Fitting
        Band (in)
        XS 28"
        S 30"
        M 32"
        L 34"
        XL 36"
        XXL 38"
        Need Help? Book a Virtual Fitting
        Hip (in) Kid's Pant Size (Ages 7-13) Teen Pant Size (Ages 14+)
        XS 25"-27" 7 ---
        S 28"-30" 8-10 ---
        M 31"-35" 12-14 00-2
        L 36"-40" 16-20 4-10
        XL 41"-44" --- 12-16
        XXL 45"-48" --- 18-20
        KT swimsuits are designed for smaller and growing bodies to fit teens and tweens.
        Need Help? Book a Virtual Fitting
        KT SIZE Band (in) Hips (in) Kids Pant Size Adult Pant Size
        XXS 23 3/4"- 25 1/4" 25" - 27" 7 ---
        XS 25 1/4" - 26 3/4" 28" - 30" 8 - 10 ---
        S 26 3/4" - 28 1/4" 31" - 34" 12 - 14 00 - 2
        M 28 1/4" - 29 3/4" 35" - 38" 16 - 20 4 - 8
        L 29 3/4" - 31 1/2" 39" - 42" --- 10 - 14
        XL 31 1/2" - 33 1/2" 43"-46" --- 16 - 18
        XXL 33 1/2" - 35 1/2" 47" - 50" --- 20 - 22
        Find the Perfect Fit

        1. Band

        First, measure around the torso right below the breast

        2. Hips

        Stand with your feet together and measure around the widest part of your hips and bottom. Keep the measuring tape parallel to the floor.

        Need Help? Book a Virtual Fitting
        Bust (in) Waist (in)
        XS 32" 24"
        S 34" 27"
        M 37" 30"
        L 40" 33"
        XL 43" 38"
        XXL 47" 43"
        XXXL 51" 48"
        XXXXL 55" 52"
        Need Help? Book a Virtual Fitting
        KT Size Band Hips
        XS 28" 25"-27"
        S 30" 28"-30"
        M 32" 31"-35"
        L 34" 36"-40"
        XL 36" 41"-44"
        XXL 38" 45"-48"
        Find the Perfect Fit

        1. Band

        First, measure around the torso right below the breast

        2. Hips

        Stand with your feet together and measure around the widest part of your hips and bottom. Keep the measuring tape parallel to the floor.

        Need Help? Book a Virtual Fitting
        Size Hips Height Weight
        XS/S 25"-30" 4'2" - 5'1" 65 - 100 lbs
        M/L 31"-40" 4'9" - 5'6" 105-130 lbs
        XL/XXL 41"-48" 4'11" - 5'6" 135 - 170 lbs