Chung was scouted after being seen in the comedy tent at the Reading Festival at the age of 16. She modelled for teen magazines, such as Elle Girl and CosmoGIRL!, and worked for companies including Fanta, Sony Ericsson, Sunsilk, Urban Outfitters, and Tampax. She appeared in music videos for artists including the Streets, Westlife, Delta Goodrem, Reuben and Holly Valance and starred as Jake in a scripted reality show called Shoot Me, broadcast on Fashion TV in 2005. After four years, Chung quit modelling with the intention of beginning an art foundation or fashion journalism course, having become disillusioned. She had developed a "distorted body image" and "low self-esteem" through modelling.