Sienna Miller "so excited" about London Fashion Week

Sienna and Savannah Miller, are "so excited" for their Twenty8Twelve debut catwalk show at London Fashion Week in February. "Twenty8Twelve is now in its fifth season and we just felt it was ready to be taken to the next level," the sisters Vogue. "British Fashion Week is celebrating 25 years in 2009 and we are thrilled to be a part of this."