Tamara Ecclestone shares snap wit newborn Serena, husband Jay Rutland and daughter Sophia, six

‘You complete us’: Tamara Ecclestone dotes on newborn Serena in adorable family snap as she admits she was ‘worried’ about having another child

She quietly welcomed her second child in Switzerland in September. 

And Tamara Ecclestone expressed her love for her newborn, Serena, in a touching social media snap on Saturday alongside her husband Jay Rutland and their oldest daughter, Sophia, six. 

The heiress, 36, cosied up to her family and on a bed of autumnal leaves in a forest as she declared to her followers that their tiny tot has ‘completed’ them. 

Family first: Tamara Ecclestone expressed her love for her newborn, Serena, in a touching snap on Saturday alongside her husband Jay Rutland and their oldest daughter, Sophia, six

She said of her two-month-old daughter: 'Serena your the best thing that happened to the three of us in one way you completed us and in another it’s like you have always been there'

She said of her two-month-old daughter: ‘Serena your the best thing that happened to the three of us in one way you completed us and in another it’s like you have always been there’

In a candid caption, she confessed that although she had been ‘worried’ about expanding her brood, she was delighted seeing her daughters interact. 

Tamara penned: ‘And just like that we became four. Serena you’re the best thing that happened to the three of us in one way you completed us and in another it’s like you have always been there.

‘Watching Fifi [Sophia] love you so much makes me so happy every day my heart is so full.

‘I can’t believe I was worried about this change but one thing is for sure what’s meant for you won’t pass you by.’

November outing: The heiress, 36, cosied up to her family and on a bed of autumnal leaves in a forest as she declared to her followers that their tiny tot has 'completed' them

November outing: The heiress, 36, cosied up to her family and on a bed of autumnal leaves in a forest as she declared to her followers that their tiny tot has ‘completed’ them

Tamara looked radiant in the snap as she sported a grey bobble hat which complemented her textured grey jacket and grey Ugg boots. 

Her daughter Sophia also wore a grey knitted hat and a cosy pink jacket while  Serena was clad in a puff jacket one-piece. 

Her businessman husband, 39, looked smart in a navy jacket and and skinny jeans. 

Jay and Tamara first met in January 2013 when they attended a blind date arranged by a mutual friend, and they became engaged just a month later. 

The couple welcomed their second daughter in a hospital near Bern, Switzerland, in September.  

Her father and Formula One boss, Bernie, confirmed the news from his home in Gstaad in the Swiss Alps, telling MailOnline: ‘I’m absolutely thrilled to be a grandfather again. 

‘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.

Happy announcement: Tamara's Bernie, confirmed from his home in Gstaad in the Swiss Alps in September that Tamara's second daughter, Serena, had been born

Happy announcement: Tamara’s Bernie, confirmed from his home in Gstaad in the Swiss Alps in September that Tamara’s second daughter, Serena, had been born

‘She has named her Serena and both of them have been already out on the town together around Gstaad.  

‘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 last. I’m getting quite the collection of grandkids!’ 

Meanwhile, Bernie, 90, announced in July that he became a father for the fourth time to a boy named Ace.

The business magnate and his wife Fabiana Flosi, 44, announced they were expecting a baby in April.

The father-of-four’s latest arrival is 65 years younger than his first child Deborah, whom he had with his first wife, Ivy Bamford.   

Baby boy! Bernie announced in July that he became a father for the fourth time to a boy named Ace -who is 65 years younger than his first child Deborah- with his wife Fabiana Flosi, 44 (pictured 2013)

 Baby boy! Bernie announced in July that he became a father for the fourth time to a boy named Ace -who is 65 years younger than his first child Deborah- with his wife Fabiana Flosi, 44 (pictured 2013)