Princess Alexandra of Hanover and Princess Sirivannavari Nariratana Rajakanya of Thailand were both spotted at the Giambattista Valli Paris Fashion Week showThe royals joined stars such as Oliver Palermo, Kiernan Shipka and Paris JacksonGrace Kelly's granddaughter Alexandra has attended the event since she was 18
See Details: Princesses at Paris Fashion Week! Alexandra of Hanover and Thailand's Sirivannavari Nariratana showcase their style prowess as they attend the Giambattista Valli show