Savannah Miller Archives

Sienna Miller and big sis Savannah Miller pose backstage at their Twenty8Twelve fashion show during London Fashion Week Spring/Summer 2010 at London’s May Fair Hotel on Monday (September 21).

“Usually I get my best ideas in the middle of the night,” Sienna told People. “We text all the time and we’re always on BBM (BlackBerry Mobile Instant Messaging),” added Savannah.

Sienna is currently starring in the Broadway play After Miss Julie with fellow Brit Jonny Lee Miller.

10+ pictures inside of Sienna and Savannah showing Twenty8Twelve at London Fashion Week… More Here! »

Sienna Miller strolls around NYC’s SoHo and grabs a cup of coffee on Thursday with equally stylish big sister Savannah. (Below, Sienna, in a leopard-print scarf, and Savannah are pictured together out and about New York City on Tuesday.)

Savannah, a graduate of Central Saint Martins school of design, is the co-designer of the Miller sisters’ fashion line, Twenty8Twelve, which is in reference to Sienna’s birthday, December 28. Pepe jeans owner Carlos Ortega is backing this endeavor financially.

The collection will reportedly hit Bergdorf Goodman and Neiman Marcus soon!

Sienna Miller lays a big wet one her elder sister Savannah at the UK premiere of Factory Girl at Vue West End on Tuesday evening in London, England.

Savannah is a co-designer of the Miller sisters’ fashion line, Twenty8Twelve. (Sienna’s birthday is December 28.) Pepe jeans owner Carlos Ortega is backing this endeavor financially.

Twenty8Twelve is set to debut in July 2007.