Sienna Miller: Matthew Williamson Book Launch Party!
Sienna Miller poses with Matthew Williamson at the party for the launch of his book at Somerset House on Tuesday (October 12) in London.
The 28-year-old British actress just returned from Dinard, France where she served as a jury member during the Dinard British Film Festival.
Over the weekend, she attended the awards ceremony with fellow actress and jury member, Elsa Zylberstein.
Last month, Sienna sat front row at Matthew‘s presentation during London Fashion Week.