Savannah Miller, Sienna Miller’s sister has made public her engagement to Jim Whewell, a rich aristocrat and brother-in-law her ex-husband. 

The fashion designer, 42, shared sweet photo to Instagram with her fiancé – who is heir to the 800-acre Wyresdale Park Estate in Lancaster.   

‘I didn’t think this Christmas could get any more special. But, magic Jim-style, I was given the most wonderful gift that I could ask for. 

Next to photos of her with a stunning diamond ring, she added: “The promise for a life filled love and joy and him,” 

Sienna Miller's sister Savannah has announced her engagement to a wealthy aristocrat Jim Whewell

Savannah Miller, Sienna’s sister, has made public her engagement to Jim Whewell (a wealthy American aristocrat).

Savannah was previously married Bushcraft teacher Nick Skinner, they separated in 2018. 

In 2020, Mail on Sunday revealed Nick’s aristocratic best friend Ruth Guise, 49, is dating Savannah’s ex Nick. To make things even more complicated, Ruth is the sister-in-law of Jim.   

Savannah explained: ‘We [Nick and I] separated in February 2018 – neither of them needed to ask my permission to get together. As always, the wellbeing of the children is all of our priority.’

Savannah and Nick share children  Moses, 16, Lyra, 13, and Bali, nine. She is also step-mother Java, 26.

Savannah was previously married Bushcraft teacher Nick Skinner, they separated in 2018.

Savannah had been married to Nick Skinner (Bushcraft teacher), and they divorced in 2018.

Jim and Savannah have a strong relationship. Jim was locked down at Savannah’s Cotswolds country home, where he helped Savannah with her science project.

In Junes, she told You Magazine: “The way things have worked out.” [with their father’s new relationship]It is wonderful that the children have only one other family. 

‘We [the four adults and the children]We were all in one place during lockdown and were together at Christmas and Easter. When a marriage comes to an end you can throw a bomb under the bus, or you can hold up your hands and say, “We’ve done everything we can and now we want to retain a healthy relationship for our children.”’

'I didn¿t think this Christmas could get any more special. Yet, in classic magic Jim fashion, I received the best gift I could ever have wished for. 'The promise of a life filled with love and joy and this man,' she wrote next to snaps showing a dazzling diamond ring.

‘I didn’t think this Christmas could get any more special. But, magic Jim-style, I was given the greatest gift I could wish for. Next to photos of the dazzling diamond ring, she added: “The promise for a life filled love and joy with this man.”

In 2007, she and her sister Sienna (pictured) launched a fashion label, which they named Twenty8Twelve after Sienna¿s birthdate.

In 2007, she and her sister Sienna (pictured) launched a fashion label, which they named Twenty8Twelve after Sienna’s birthdate.

Savannah graduated from London’s Central Saint Martins art college in 2004 with first-class honours, while pregnant with Moses and already stepmother to Nik’s son Java, then eight.

 Somehow finding time to work for Alexander McQueen, Anya Hindmarch and Matthew Williamson along the way, she confesses that before meeting Nik (a bushcraft teacher from Devon) she hadn’t had much time for relationships. ‘I didn’t really have an adult life before I became a mum. It was just that we always had a baby with us. That was our reality.’

In 2007, she and her sister Sienna launched a fashion label, which they named Twenty8Twelve after Sienna’s birthdate.

Jim is a soft-spoken, charming man with impeccable manners. He runs a profitable wedding company from the family home, where he promotes eco-weddings in which guests are accommodated in yurts.

Savannah Miller

Jim Whewell

Savannah Miller is a fashion designer who has fallen for Jim Whewell. He is the rich heir to Wyresdale Park Estate, Lancaster.

According to an insider, Nick and Sav have just fallen out of love. Although their relationship had been in trouble for quite some time before they split, they remain close friends.

Ruth Guise, a mother of one and a free spirit, is Ruth’s daughter. She also runs her fashion label, Savannah.

Nick was once freed from the clutches by the Costa Rican cult, and now lives a life of freedom. 

Following the announcement of their  Christmas engagement, many well-heeled friends rushed to the comments to congratulate the couple.

Sadie Frost was the wife of Jude Law’s ex-husband Sienna and wrote “Awww congratulations”