Kiwi all-woman supergroup When The Cat's Away are reuniting to pay tribute to friend and fellow bandmate, Margaret Urlich.

The one-off performance is set for October 1 in Auckland, where the group will honour Urlich and celebrate her life following her death last year.

Founding member Debbie Harwood says she'd hoped for a reunion for the last 33 years, and Margaret Urlich's passing inspired them to come together.

"She was in Australia and the borders were shut, we didn't have a chance to say goodbye to her. And so this is our way to help us grieve, as much as anything."

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