"We were really excited. I'm a huge fan of the Hunger Games."
The second chapter of the three-part series, The Hunger Games: Catching Fire, is released in cinemas around the world today.
Miss Mules has spent the past 18 months creating costumes for the young characters in the movie - dubbed "tributes" - who must fight to the death in a televised battle.
Her costumes - tights, singlets, jumpsuits and jackets - are mainly black with metallic silvers and greys used for stylised panels.
She did not have any contact with the cast during that time, but met them at the film's premiere.
"My first question was whether the cast liked them and apparently they were really happy because they had been nervous about wearing lycra," Miss Mules said.
Lucas Hugh sportswear items feature heavily in the first half of the film, where the tributes train for combat.
Miss Mules has lived in Kerikeri - where her father was a kiwifruit grower - and later in Jamaica, Auckland, Wellington and New York before moving to the United Kingdom.
She is a former St Cuthbert's College pupil and studied fashion at Massey University, in Wellington. Her parents and siblings still live in Auckland.
Although she has called London home for more than a decade, she says her brand was influenced by the Kiwi lifestyle.
"In New Zealand, you can wear your gym gear while taking the kids to school and then head to the gym - everybody's multi-tasking."
