She is the owner of the fashion brand Filippa K, founded in 1993, and runs it with her former husband Patrik Kihlborg.
[1][2] Knutsson co-founded Filippa K, with Patrik Kihlborg and Karin Segerblom in 1993.
[3] She was awarded a Patriotiska Sällskapets Näringslivsmedalj in 2010 by the Royal Patriotic Society for the entrepreneurship that has been part of her Swedish business development.
[4] The brand Filippa K has been awarded with the Swedish design prize Guldknappen.
[3] The company Filippa K defines their structure as a curious and conscious brand that recognises innovative sustainability as its guide to growth.