Sienna Miller's sister Savannah, 42, announces engagement to wealthy aristocrat Jim Whewell

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

Sienna Miller's fashion designer sister Savannah, 43, marries

Sienna Miller's sister Savannah reveals she's going 'full on' for

Sienna Miller's sister Savannah surprises in sheer corset wedding

Miracle premature baby born the size of an iPhone in June spends

Savannah Miller marries James Whewell, the heir to Wyresdale Park

Sienna Miller's fashion designer sister Savannah, 43, marries

Sienna Miller - Latest News and Updates on the British-American

Sienna Miller's sister Savannah, 42, announces engagement to

Princess Maria Laura of Belgium, 33, announces engagement to

TALK OF THE TOWN: New love for Sienna Miller's sister Savannah as

Sienna Miller Wore a Baby-Blue Velvet Minidress to Be Her Sister's

Sienna Miller's fashion designer sister Savannah weds in dress of her own design - OK! Magazine

Sienna Miller's fashion designer sister Savannah marries wealthy

Sienna Miller's fashion designer sister Savannah weds in dress of her own design - OK! Magazine

Sienna Miller - Latest News and Updates on the British-American