The owners, mother-and-daughter team Jillian Intini and Casey Bryden, created the stylish parasol after Mrs Intini, a former nurse, saw too many women suffering from skin cancer.
"We sold $5000 worth of parasols in five days following the Duchess's visit to Perth," Mrs Bryden said.
We're so thrilled that the Duchess seemed to love her Sunbella and that she used it throughout her stay here in WA – she even had it in her hand as she boarded the jet.
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READ NOWwe've also been overwhelmed by the response from the community; lots of people recognised her parasol as a Sunbella and celebrated the moment with us via social media and we're grateful for their support.
"The whole experience has been exciting, affirming and humbling."
The custom, one-of-a-kind parasol was designed specifically for the Duchess and gifted by the State.
It features a white cotton canopy with the highest possible UPF rating, meaning it blocks more than 98 per cent of UV rays.
The success of sales comes after the brand's recent win of a Business Excellence award at the National AusMumpreneur Awards in September.