Paris Hilton, Katharine McPhee and more attend Rachel Zoe's Resort holiday presentation

Rachel Zoe's Resort 2019 presentation brought out a slew of her A-list besties for a night of holiday glamour.

The 47-year-old designer unveiled her latest collection at her first brick-and-mortar store in Palisades Village. In a room full of sequins, velvet, and metallics, there was no shortage of stars.

Paris and Kathy Hilton had a mother-daughter date as they celebrated the new collection, where guests enjoyed Perrier-Jouët champagne and delicious cocktails by Avión Tequila and Absolut Elyx. The newly-single beauty mogul kept it playful as usual, wearing a leopard blouse from Zoe's collection paired with a leather mini skirt.

Sara and Erin Foster were both dressed to kill in striking black dresses. Sara stunned in a satin mermaid maxi while Erin opted for a chic velvet long sleeve dress, staying in tune with the holiday spirit.

Their future step-mom (or something like that) was also in attendance, looking more glam than ever. Katharine McPhee, who recently got engaged to David Foster, was alluringly cool in a navy sequin plunging power suit.

She's not a regular mom, she's a cool mom!