Sienna Miller [1] is clearly enjoying soaking up the sun at the beach. The 37-year-old actress is currently on holiday in Tulum, Mexico [2], and showed off her toned physique in a black bikini. Her flattering swimsuit came with a scoop neck top and a pair of tiny bottoms that came in the same hue. Her flattering two-piece [3] had me wishing I could teleport to Mexico for holiday stat. Scroll on to see all angles of her bikini.
