Ms Barrow said the rest of her family had already become citizens, and she was the last to get her New Zealand citizenship.
"It's been a long time," she said, adding "I'm still Fijian at heart".
The ceremony also included kapa haka items by children from Selwyn Primary School. Each new citizen or family received a book called Choice and a seedling.
Mrs Chadwick said the seedling was for them to plant in a special place so they could put their roots into the community.
The women also received a corsage.
Two Indians, eight Filipinos, one Fijian, eight South Africans, one German, three Nigerians, two British, two Thai, three Dutch, one Cambodian, one Taiwanese and one Czech person became citizens.