On a quiet afternoon in southwest London, Martha Lady Sitwell, a star of the new Bravo series “Ladies of London: The New Reign,” sipped a Coke Zero and smoked a Marlboro at her home in Battersea. Her magpie, Hecate, perched on her shoulder and tried to hide a worm in her hair.

Hecate, whom Sitwell rescued as a hatchling and named for the Greek goddess of magic, seemed eager to exploit her owner’s easygoing nature, taking run of the house, pecking at a sandwich on the table and swooping low overhead. (All visitors are offered goggles in case Hecate spots their pupils moving and decides to stick her beak in their eye.)

Sitwell, 46, dressed in a gray turtleneck and light jeans, her lips and nails both painted red, reflected on when she learned she had been cast in the series, which follows the lives of affluent Americans living in London and royal-adjacent Brits.

“I thought, well, who’s the most successful?” she said. “So, I watched two episodes of the ‘Kardashians,’ and I thought, You’re really going to struggle to emulate them. And then I figured, Well, they cast you, so they want you.”

The series is a reboot of a Bravo series that ran for three seasons, from 2014 to 2017. It borrows many of the same themes of the original — primarily, the awkward and dramatic moments that arise when American and British cultures clash. The show also features a few of Sitwell’s real-life friends and society acquaintances, like the British socialite and former “Made in Chelsea” star Mark-Francis Vandelli, and Emma Thynn, the Marchioness of Bath. The finale episode airs Thursday.