Sienna Miller has launched her second collection with Marks & Spencer, featuring a 35-piece party edit inspired by her personal style and vintage finds, just in time for the festive season. The collection includes statement prints, embellishments, faux furs, and tailored pieces designed for both day and evening wear, reflecting Miller's signature bohemian aesthetic. Key items include a lace-trim silk maxi dress and a David Bowie-inspired faux fur jacket. Miller expressed excitement about seeing her designs worn by customers and noted the rewarding experience of creating the collection during the actor's strike while pregnant. Marks & Spencer has seen a positive shift in style perception, credited in part to its collaborations with Miller, as they aim to cater to customers looking for stylish options for the holiday season. The collection went live on October 31, and early indications suggest it may emulate the success of her first, which sold out quickly.