Kering took a 51 percent stake in the brand in 2013; Kane created the brand in 2006.
Guests included Edie Campbell, Pam Hogg, Patrick Grant and Erdem Moralioglu.
At at time when many diehard Democrats and Republicans were not seeing eye-to-eye, Clinton chose purple which is a combination of blue and red.
The designers hosted parties at their respective boutiques to mark the start of the season.
Christopher Kane, Roksanda, Rapha open at Oxfordshire, England outlet.
Etro, Bally, Christopher Kane hosted art-related events.
The range will be sold exclusively at the Nars boutique in Covent Garden and on narscosmetics.co.uk.
The duchess had worn the skirt-suit before.
“This is like having a kiss for the first time — this is big,” explained the singer Sunday at a party hosted by Harper’s Bazaar and American Express.