"I prefer the aesthetic of Scandinavian and French kids' clothing, and there is nothing like it here. I just wanted to do something a bit less babyish, and more like what I wear," she explains.
"I wanted to offer something a little darker for babies, nothing too cute and using lots of black and white and other darker shades."
"We were both over how cutesy and pastel-coloured childrenswear is," says Jimmy D's James Dobson, "and decided it was time to give kids an option to dress as cool as their mums - or dads!"
The pair are close friends, and Hammon had been trying to talk Dobson into making tees for babies for a while, so the partnership seemed natural. "Plus I wear Jimmy D all the time so it was an obvious choice."
As well as the initial collaboration, Hammon will also be producing bloomers, leggings and "a really cool alternative to fairy wings", all in limited runs for ages 3 months to 2 years.
* Jimmy D 4 B.A.M. is stocked in Auckland at Children of Vision, ph (09) 379 8930, and in Wellington at The Service Depot , ph (04) 499 7697, and online.