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

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 wore a baby-blue velvet dress to be her sister 's

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British Vogue - Inside Savannah Miller's festive London wedding

Nick Skinner's Instagram, Twitter & Facebook on IDCrawl

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

The Non-Blonde: Sisters- Sienna and Savannah Miller

Celebrity sisters Sienna and Savannah Miller pose for their

Nick Skinner's Instagram, Twitter & Facebook on IDCrawl

Savannah Miller: Sienna's Big Sister: Photo 507621

Sienna Miller 'pregnant': 'Actress expecting first baby with