Princess Sirivannavari of Thailand

Sirivannavari (born 8 January 1987) is a Thai princess and the second daughter of King Vajiralongkorn by his former consort Sujarinee Vivacharawongse (commonly known as Yuvadhida Polpraserth). She is also the only one of their children in the line of succession and to bear royal titles. She has produced works as a fashion designer, and competed in sports as an equestrian and badminton player.

Early life and education Sirivannavari was born Mom Chao Busyanambejra Mahidol (; ; ), but later changed to Mom Chao Chakkrityapha Mahidol , and once again to Mom Chao Sirivanvari Mahidol upon order of Queen Sirikit. She has four full siblings. Following her parents' divorce in 1996, her mother moved with her siblings to the United Kingdom; her father then ordered Sirivannavari's abduction and return to Thailand.

Her title name is Her Royal Highness Princess Sirivannavari.

Sirivannavari graduated with a Bachelor of Arts degree from Chulalongkorn University and a master's in design from Ecole de la Chambre Syndicale de la Couture Parisienne. She was elevated to Princess status by royal command of her grandfather, King Bhumibol Adulyadej, on 15 June 2005.

Career Sirivannavari has been appointed as a specialist in the Royal Thai Army with the rank of major general, according to the royal gazette. King Maha Vajiralongkorn announced the appointment of his daughter in the latest round of military promotions that became in effect on 1 April 2023. Sirivannavari was the patron of the Royal Stable Unit of the 2nd Cavalry Division, King's Guard, Royal Thai Army.

In June 2026, Sirivannavari participated in two important Thai Royal Family events. On June 26, she participated in official Royal mourning events for the demise of the Princess Bajrakitiyabha, which included gifting 47 saffron robes to Buddhist monks and other formal religious ceremonies. She also participated in an official visit to France, with their Majesties the King and Queen, to commemorate 170 years of France–Thailand relations, arriving at Paris Orly Airport on June 28. In France, she met President Emmanuel Macron and Mrs. Macron. In this, she follows in the footsteps of her grandfather, King Bhumibol Adulyadej, who represented his country in international sailing events. A badminton tournament that made its debut in 2016, the Thailand Masters, bears her name.

In 2007, Sirivannavari began riding horses at age nine. She trained in France at the International Moniteur d'Equitation, Le Cadre Noir de Saumur. She competed as a member of the Thai equestrian sports team in the 2013 and 2017 SEA Games.

Fashion design Sirivannavari was invited by Balmain, a French luxury fashion house, to present her fashion show in Paris. Her debut Paris collection was titled Presence of the Past, which drew on memories of her royal grandmother as well as giving a modern interpretation to traditional Thai costume. The following year, she presented her own fashion show in Paris. She designed a dress worn by Sophida Kanchanarin, Thailand's representative in the Miss Universe 2018 pageant.

Styles, honours and symbols National honours

Foreign honours

Appointments WIPO Ambassador for Fashion and Design (28 May 2026)

Honorary degrees Chulalongkorn University – honorary Doctorate in Fine and Applied Arts, in recognition of her design skill,

Styles and symbols

Ancestry