The 32-year-old actress later attended a private dinner at the Connaught Hotel to celebrate the collection. She was joined by Kate and fellow models Suki Waterhouse, Cara Delevingne, and Poppy Delevingne.
Earlier in the day, Cara looked chic in a blazer and jeans while attending the Sky Arts’ Playhouse Presents season launch party.
35+ pictures inside of Sienna Miller and all the models out partying together.
t: Sienna Miller hits the red carpet while attending the launch of the Kate Moss for Topshop collection at the Oxford Street store on Tuesday (April 29) in London.