One size jeans have officially arrived in the USA! The world famous stretch jeans (as seen on buzzfeed and business insider) which fit a US size 2-14 can now be purchased on onesizeusa.com, delivering to all of North America.One size jeans have officially arrived in the USA! The world famous stretch jeans (as seen on buzzfeed and business insider) which fit a US size 2-14 can now be purchased on onesizeusa.com, delivering to all of North America.One size jeans have officially arrived in the USA! The world famous stretch jeans (as seen on buzzfeed and business insider) which fit a US size 2-14 can now be purchased on onesizeusa.com, delivering to all of North America.