“I use self tanner. I love the brand Sontse, from Australia.”

The “RHOBH” alum’s famous for hosting a star-studded Christmas soirée each December — a “big undertaking” she tells Page Six Style she starts planning “right after the ball drops” each year.

On the day of her big Bel Air bash, Hilton got glam with help from a few of her go-to products. The beauty-savvy star spills her secrets to looking event-ready in a flash — from Australian self-tanner to the eye masks she goes through “like crazy.”