Inez van Lamsweerde and Vinoodh Matadin for Frame Denim

Inez van Lamsweerde and Vinoodh Matadin for Frame Denim.

Frame Denim’s Erik Torstensson and Jens Grede come up with some of their best ideas over dinner with friends. It’s where the London-based duo—who also run Saturday Group, a creative agency, and Industrie magazine, a navel-gazing glossy for the front-row set—hatched a collaboration with the photographers Inez van Lamsweerde and Vinoodh Matadin on his-and-hers jeans. Bearing I- and V-shaped belt loops, the styles (skinny, a little slouchy, and in a very specific shade of blue) took months to develop— but then, such are the travails of working with fashion insiders. “They’re very precise artists,” says Torstensson of van Lamsweerde and Matadin. “But that’s what makes the whole process interesting.”