Seth-Cohen photographed the well-known models in New York about six weeks ago.
"What I've always loved about Ari's images, and his ladies, is the sense of looking to the future rather than the past. There's an optimism and excitement for the moment in his women that I applaud," Walker said.
Aged 92, Ilona Royce Smithkin is the most senior of the group, but also stands out for her bright orange hair and, in one shot, for wearing a red feather boa.
Industry experts support the move, which they say is becoming the trend rather than an exception.
Auckland designer Sera Lilly said: "I think everyone can look fashionable and gorgeous. I never use typically stick-skinny models; always use models with a bit of meat on them."
Fashion blogger and commentator Katherine Lowe said: "It's a little edgy, and I think Karen Walker Eyewear is edgy so it fits with the brand."