Katharine McPhee Supports Future Step-Daughters Sara & Erin Foster at Leatherology Event!

Erin and Sara Foster pose for a photo with their future step-mom Katharine McPhee while hosting a private cocktail celebration for Leatherology on Thursday (November 15) at the Beverly Hills Hotel in Beverly Hills, Calif.

The Fosters hosted the event to welcome Leatherology co-founders Rae and David Liu to the west coast.

“Was so nice of my daughters Sara and Erin to invite me to their event last night for Leatherology and hook me up with some beautiful stuff,” Kat wrote on her Instagram Story the next day. If you didn’t know, she is engaged to their dad David Foster!

Some other celebs in attendance at the event included Demi Moore, Westworld‘s Angela Sarafyan, Elizabeth Chambers Hammer, The Vampire Diaries‘ Nina Dobrev and Claire Holt, Kelly Sawyer, Jennifer Meyer, Molly Sims, Rachel Zoe, and photographer Gray Malin.

During the event, guests were invited to customize a Leatherology accessory of their choice. Leatherology, which is known for its high-quality leather bags and accessories, had a hand-paint artist onsite for guests to experience the brand’s process firsthand. Guests sipped on Casa Dragones tequila.

FYI: Angela is wearing a Babaton for Aritzia jumpsuit.