Francesco Risso will become creative director of the label.
The designer had most recently been freelancing after running his own label and working at Cerruti and Jack Wills.
The reality star was earlier this year named global ambassador for the New Zealand-based purveyor of skin-care products containing Manuka honey and bee venom.
The Newa is set to launch at Bergdorf Goodman and Neiman Marcus for holiday.
The herb-driven skin-care brand has launched on Anthropologie’s web site with seven products priced from $24 to $96.
Starting with a peel from BeautyRx, The Ritualist will roll out new facial treatment offerings every six weeks.
The two came together to produce a line of 14 advanced products launching on Nov. 15.
The serial entrepreneur behind the Bliss Spa group, Soap & Glory and FitFlop will launch a bath and body product range exclusively with Liberty next month.