Brown was born in England in 1975 and moved to New Zealand when she was fifteen.
[1][2] Brown volunteered at bFM when she was eighteen, carrying out a variety of tasks, including presenting radio shows and hosting talkback.
[3] Her first television appearance was the late-night TV show Space on TV2, which she co-hosted for three seasons with Dominic Bowden and then Hugh Sundae.
[2][1][4] Brown co-created and starred in a New Zealand sitcom, The Jaquie Brown Diaries, as a fictionalised version of herself.
Brown presented at the New Zealand Music Awards as well as being the Television Tutor for New Zealand's Next Top Model.