BeautyNicky Hilton Shares Her Wellness Rituals: From Mom Kathy's Beauty Rules to Visits to Sister Paris' Sliving SpaBy Carly Sloane Published: 1:00 PM PDT, May 6, 2026Nicky Hilton told ET her family-inspired wellness routine while celebrating her role as THE WHOO's new brand ambassador.Spa days are a family affair for Nicky Hilton. The designer, 42, opened up to ET about her full wellness routine, from the skincare lessons she still follows from mom Kathy Hilton, to what goes down inside Paris Hilton's iconic at-home Sliving Spa in Los Angeles, California.