The actress, who stars in U Beauty's latest campaign, tells PEOPLE about her rigorous self-tanning routine Michelle Monaghan was committed to her role in The White Lotus. At a recent New York City event celebrating her as U Beauty's first-ever brand ambassador,

Monaghan, who was introduced to Cunningham by her The White Lotus costar Leslie Bibb, said she “deferred” to the hair stylist’s expertise.

The “White Lotus” actress, 48, was just announced as the first-ever brand ambassador for U Beauty, a company Monaghan has been loyal to over the years. Though many partnership opportunities have come her way, the “Made of Honor” alum turned them down, making this her inaugural beauty campaign, she told People.