ThirdLove is an American lingerie company founded by Heidi Zak and her husband, David Spector, in 2013. The brand is known for marketing body positivity and offering size-inclusive bras and half-cup sizes. ThirdLove is also known for its online FitFinder quiz, which helps users determine their best fit bra and style.[1][2][3]
History
ThirdLove was inspired by Zak's own challenges with bra shopping, when she could not find bras that were both beautiful and comfortable. In 2013, Heidi left her Google advertising job to take a data-driven approach to designing bras.[4][5][6]