The fundraising event took place at Bertie’s Club, on South Parade in Whitley Bay, at the start of Childhood Cancer Awareness Month.
Zandra, 34, took part to show support for her 18-year-old nephew, Daniel, who has cancer.
She had her long hair chopped off into a short bob and donated it to charity The Little Princess Trust, which makes wigs for youngsters who have lost their hair through cancer treatment.
Her sister Jeanette and Daniel also both had their heads shaved.
The event, which raised more than £1,000, was part of CLIC Sargent’s Big Buzz challenge, which encourages people to become a 'life shavers' to support children and young people with cancer.
Zandra said: “The reason we chose to do this was because our nephew Daniel found out in July that he has Hodgkin’s Lymphoma.
"He was due to start treatment on Monday and so we thought not only was this a nice way to support two charities which support children and young people going through this disease, but a good way for him to see all of his family and friends before starting treatment.
"We have already been allocated a CLIC Sargent Social Worker called Steven Shiels, who’s been working alongside us to support Daniel through his treatment.
"I know the money is going to two fantastic causes and that is what inspired me to go through with it.”
CLIC Sargent Fundraising Manager Dee Tyler added: “I’d like to say a huge thank you to Zandra and Jeanette for joining our Big Buzz challenge and becoming life shavers."