The Tamara’s World star and her husband Jay Rutland welcomed Serena into the world at a hospital near Bern in Switzerland a week ago, her father, billionaire former Formula One boss Bernie Ecclestone, revealed to the MailOnline from his home in Gstaad in the Swiss Alps.

“I’m absolutely thrilled to be a grandfather again,” he gushed. “Tamara gave birth to a little girl seven days ago in the same hospital that my son Ace was born in. Mother and baby are doing brilliantly. She’s a beautiful little thing. She has named her Serena and both of them have been already out on the town together around Gstaad.”

The 89-year-old added that he was thrilled Tamara’s baby will be close in age with his son Ace, who was born in July.

“Serena and Ace are very close in age and so will be able to play together when they’re a little older. I’m delighted that Serena is with us at least. I’m getting quite the collection of grandkids!” he said.

The 36-year-old socialite, Bernie’s eldest daughter, is already mum to six-year-old daughter Sophia, who had asked for a sister.

“She’s been talking about how much she wants a sibling, and for the first time I’m open to the idea,” Tamara told Hello! magazine last year. “She really wants a sister, but certainly not a brother – she’s very girly and thinks boys are smelly. Having another baby is obviously scary because it would mean a big change, but I’m definitely up for it.”

Tamara and Jay have been married since 2013.