Sewell had been with Farfetch for a little more than a year.
The collection designed by Alessandro Sartori will be available on Farfetch beginning Monday.
But timing an offering in a volatile market can be tricky.
Environmentalism was a talking point with honorees and guests at Tuesday’s F4D First Ladies Luncheon.
Founder José Neves said the luxe platform is ready to buckle down after scoring a valuation of more than $8 billion in its IPO.
The new BFC chair wants to drum up more support for emerging and mature designers and brands.