There are increasing concerns for the wellbeing of safety of missing Christchurch woman Sharon Helen Cross, 57.
Ms Cross flew to Auckland on December 27 and was last seen in CCTV footage from a central city retail outlet on December 30, at around 3:40pm.
Police say she has changed her appearance by cutting and concealing her hair.
She is described as Caucasian, about 170cm tall and of thin build. She may still be carrying a blue shopping bag she had in CCTV footage.
Anyone with any information on her whereabouts is asked to contact police on 111 or (09) 302 6400, or call Crimestoppers anonymously on 0800 555 111.