Kallio began her international modelling career in 1990 with an editorial shoot for BritishElle. She was soon noticed by Karl Lagerfeld, who became her patron, and Kallio started an intense collaboration with the designer and the prestigious fashion house of Chanel.[1]
In the 2000s, Kallio worked for Nicole Miller for ten years,[1] also having her own lingerie design business.[2] As of 2010, Kallio models among others for J.Crew, and appeared on the cover of FinnishElle for its 2nd anniversary issue.[1] Kallio is represented by Ford Models in New York.[2]
Personal
Kallio lives in New York. She also has a grown son from a previous relationship.[3] In addition to modeling, Kallio works as a real estate agent.[4]
Kallio's autobiography Huippumallin päiväkirja (Top Model's Diary) was published by Tammi in Finland in 2005.