The 28-year-old Orokonui Ecosanctuary education officer said she went to her car on Orbell St, Dalmore about 7am this morning to find it open and a purple, hard-cover suitcase with seven performance dresses, jewellery, wigs and a selection of other pieces stolen.
Her partner's white hard-cover case was also taken but was empty.
Ms Mackenzie said the dresses had a lot of sentimental value.
"I would really, really love those outfits back no questions asked. [They are] my really, really best ones,'' she said.
"They are really precious to me and they have a lot of sentimental value.''
The dresses were easily identifiable.
A gold dress, a tiger styled outfit, a black, sparkly Indian shawl and a red rose dress were all missing as well as a gold, spider necklace.
Ms Mackenzie said she felt stupid that she had left her car unlocked as she did not think this would happen.
"I was really stupid. I feel really stupid now.''
Police had been contacted about the theft.
