She has appeared in Vogue (Paris, Italy, Germany, Russia, China, Spain, Mexico, Japan, Korea, US), Muse, Elle (US, Italy, France), Numéro (France, Tokyo), Glamour (US), Marie-Claire (Italy), Another Magazine, Harper's Bazaar (US), i-D, and on the covers of Tush magazine and V magazine as the eighth ranked model of spring 2008.
Garrn lived in an apartment in Financial District, Manhattan in New York City with her best friend Ali Stephens.
Proceeds from the sales of her Closed T-shirt, her “Toni” jeans for women are donated to a charity that focuses on the education of young girls in Africa.
She is the face of fragrance Simply by Jil Sander as well as for Elie Saab "Le Parfum".
Toni Garrn has worked with photographers like Steven Meisel, Peter Lindbergh, Karl Lagerfeld, Paolo Roversi, Mariano Vivanco, Miles Aldridge, Craig Mc Dean, Corinne Day, Camilla Åkrans, Ellen von Unwerth, Mert and Marcus, Victor Demarchelier, David Bellemere, Greg Kadel and Mario Testino.
In 2014, she collaborates with German denim label Closed and designs her own line of jeans.