Kiwi fashion designer Karen Walker says there's a point of difference that sets her range of sunglasses apart from other high-end brands - fun.
And it's an approach that appears to be paying dividends.
Since the 2005 launch of Karen Walker Eyewear, annual sales have ballooned to around 28,000 pairs, Walker said, which translates into about $10 million of revenue.
The sunglasses, with an average retail price of $329, are sold in more than 300 fashion outlets around the world, including Harvey Nichols in Britain and Barneys in the United States.
Celebrities including Rihanna, Alexa Chung, Sean Lennon and Gwen Stefani have been photographed with the eyewear.