Bianca Jagger was almost unrecognizable at the Dior show in Paris on Monday.The 77-year-old ex-wife of Rolling Stones crooner Mick Jagger was wearing a new black bob hairstyle that looked extra poufy but perfectly complemented her stunning facial features.The former Studio 54 fixture - born Blanca Pérez-Mora Macías - mingled with other greats Catherine Deneuve and Carla Bruni. A new look: Bianca Jagger was almost unrecognizable at the Dior show in Paris on Monday. The 77-year-old ex-wife of Rolling Stones crooner Mick Jagger was wearing a new black bob hairstyle that looked extra poufy In Style: The former Studio 54 fixture - born Blanca Pérez-Mora Macías - mingled with other greats Catherine Deneuve and Carla Bruni The good ole days: Mick Jagger, the lead singer of The Rolling Stones, and his wife Bianca in the 1970s; they were wed between 1971 and 1978Bianca wore her black hair in a 1950s style with little curls at the ends and a bouffant puff on top.The beauty added ruby red lipstick and black eyeliner as she looked as glamorous as ever.