What is sister sizing? – SHEER

Ever tried on a bra, where the bra cup fit perfectly, but the band was loose? But then when you went down a band size, whilst keeping your cup size, the cup started to feel tight & then the underwires started to dig in, making the new bra size seemed even more uncomfortable? Well, that's when you find your sister size! Watch now to discover the secret to finding the perfect fit.

What is sister sizing? – SHEER

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What is sister sizing? – SHEER

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RMS Olympic (Titanic's Sister Ship) and the sheer size of the rudder and props. Note the person standing at the bottom. : r/interestingasfuck

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Sister size, Bustyresources Wiki