She has said she had no ambitions to write at the time but that the editorial team nurtured her ability and were enthused by her interest in environmental issues.
In 2004, Siegle went freelance, editing a section for Marie Claire UK magazine and became a columnist on ethical living for The Observer.
[2] Siegle has chaired several debates on the fashion industry in the House of Commons and House of Lords[3] taken part in main stage debates at the Royal Society[4] and in 2016 interviewed both Dame Vivienne Westwood[5] and Stella McCartney live on stage, the latter as part of the Kering sustainability Awards in London[6] In December 2016, she hosted the APSE in Blackpool.
Together Firth and Siegle attended the 2011 Oscars to promote sustainable fashion and have worked on other events such as the Met Ball and the Golden Globes and BAFTAs.
[8] In 2014, Siegle travelled to the Brazilian Amazon and on her return, established a project with Firth and Gucci to produce zero deforestation handbags.