The Sisters Miller: Savannah (left), and Sienna (right). Photo courtesy of Twenty8Twelve

Savannah Miller is tall, gorgeous, passionate about fashion and half of design duo Twenty8Twelve. Her counterpart? Sister Sienna, maybe you've heard the name?

Ya know, Jude Law's ex, Vogue cover model and current Broadway actress.

After an intimate champagne-filled dinner at the Royalton Hotel in NYC, StyleList had a chance to catch up with the chic siblings to discuss the brand's Summer 2010 collection.

"We wanted to capture the heat of summer," Savannah told us. "We dip-dyed some garments in bleach to make them look sun-washed, chose washed-out linen as one of our main fabrics and kept the whole look deconstructed. Picture Kate Moss in Ibizia -- it has that kind of vibe," she explained.

Every piece in the line evokes that summery feeling -- lounging in a hammock somewhere breezy, quiet and salty.

Just like their previous collections, the pieces for summer are classic with a twist: a double-breasted organza jacket is sheer so that the shoulder pads show through, while a white T-shirt is festooned with small buttons to make the seams fall off-kilter.

"That's what makes it cool and unique," Savannah says. And we couldn't agree more.