Teen Underwear Sizing Chart For Period Panties

'Oh No' Proof Underwear
Size Hips (in) Hips (cm)
XS 25” - 27” 63 - 68cm
S 26” - 30” 66 - 76cm
M 31” - 35” 78 - 88cm
L 36” - 40” 91 - 101cm
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Our period panties are made to fit teens and tweens. For the adult version check out Knix.
The Fiona Bra
Size Band Cup
XS 28” - 30” A/B
S 30” - 32" A/B
S+ 30” - 32" C/D
S++ 30” - 32" DD/E
M 32” - 34” A/B
M+ 32” - 34” C/D
M++ 32” - 34” DD/E
L 34” - 36” A/B
L+ 34” - 36” C/D
L++ 34” - 36” DD/E
XL 36” - 38” A/B
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Use your band and cup size to find your Knixteen bra size!
The Mo'Ne Bra
Size Band
XS 28” - 30”
S 30” - 32"
M 32” - 34”
L 34” - 36”
XL 36” - 38”
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Use your band size to find your Knixteen bra size! Don't worry about your cup size, each size fits up to a DD cup!
The Jazz Bra
Size Band Cup
XS 28” - 30” A/B
S 30” - 32" A/B
S+ 30” - 32" C/D
M 32” - 34” A/B
M+ 32” - 34” C/D
M++ 32” - 34” DD/E
L 34” - 36” A/B
L+ 34” - 36” C/D
L++ 34” - 36” DD/E
XL 36” - 38” A/B
Shop this Bra
Use your band and cup size to find your Knixteen bra size!
The Jessica Bra
Size Band
XS 28” - 30”
S 30” - 32"
M 32” - 34”
L 34” - 36”
XL 36” - 38”
Shop this Bra
Use your band size to find your Knixteen bra size! Don't worry about your cup size, each size fits up to a DD cup!