"The girls are already dying to get the new uniform as quickly as they can, they love it," she said.
A group of students worked alongside designers from New Zealand Uniforms to come up with the new kit.
"We haven't had a change in some time and we felt the uniform needed to be refreshed and for the girls to have considerable input into what they wear to school each day," she said.
"The group of girls involved in the design took the information back to their form classes so that a really wide range and large number of girls had input. It was sort of designed by the girls for the girls."
Mrs Nixon said students were keen to keep traditions but included modern elements.
"The girls really kept with supporting the school's colours and for the blazer the emblem reflects our crest and also our aspects of Maori, so in the emblem there is design reflecting Ngati Kahungunu.
"We used to have a summer and winter uniform, so now we just have the range.
"They loved the kilt so the new uniform has a more modern kilt, and they liked the idea of wearing pieces so the girls can now mix and match."
Mrs Nixon said the new selection was cheaper than before.
Year 13 students would still wear mufti, but were asked to dress in uniform for formal occasions.