Sienna Miller (born 28 December 1981) is an American British actress and former model celebrated for her acclaimed performances across film, television and theatre. She rose to international prominence with roles in Layer Cake, Alfie and Factory Girl, before earning critical recognition for performances in The Edge of Love, Foxcatcher, American Sniper and The Girl, the latter earning her BAFTA and Golden Globe nominations. More recently, she has appeared in Anatomy of a Scandal, Horizon: An American Saga and My Mother's Wedding. Beyond acting, the celebrity has long been recognised as a fashion influence, having become synonymous with the bohemian style of the mid 2000s and later evolving into a more polished, sophisticated aesthetic.

Miller's personal style effortlessly blends relaxed British cool with understated glamour, moving between bohemian separates, tailored pieces and elegant occasionwear. Her fashion credentials have seen her associated with leading houses including Chloé and Burberry, while her eyewear wardrobe spans distinctive designer and heritage styles. She has been seen wearing sunglasses from Balenciaga and Bottega Veneta, ranging from oversized fashion frames to more streamlined silhouettes. Whether attending Wimbledon, walking a film festival red carpet or making an off duty appearance, Sienna Miller demonstrates an instinctive approach to accessories, using sunglasses to add a polished finishing touch without losing her effortlessly cool aesthetic.