Princess Sirivannavari of Thailand

She has produced works as a fashion designer, and competed in sports as an equestrian and badminton player.

• Name — Sirivannavari • Birth Name — Busyanambejra Mahidol • Born — 8 January 1987 • Birthplace — Bangkok, Thailand • Full Name — Sirivannavari Nariratana Rajakanya • House — Mahidol • Dynasty — Chakri • Father — Vajiralongkorn (Rama X) • Mother — Yuvadhida Polpraserth • Religion — Theravada Buddhism • Occupation — * Fashion designer • athlete

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.

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. Notably, she walked directly behind The Queen, and in front of all other dignitaries, which indicated her high position in the order of precedence.

Sirivannavari represented Thailand in badminton at the 2005 Southeast Asian Games in the Philippines, winning a team gold. 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. • Illustration — Princess Sirivannavari at WIPO in May 2026 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.

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. YouTube personality Wanchaleom Jamneanphol, known online as Mixy Bigmouth, was subsequently threatened with prosecution under Thailand's lèse-majesté laws after describing the dress as ugly. Sirivannavari was appointed as WIPO Ambassador for Fashion and Design on May 28, 2026 by WIPO Director General Daren Tang, for her contributions to creativity, innovation and strategic IP use. Her Royal Highness holds over 500 intellectual property assets including 256 designs, 275 copyright registrations and registered trademarks in 34 countries for jewelry, leather goods and home decor.

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

• Background — #f46e0f • Color — #ffffff • Name — Princess Sirivannavari of Thailand • Size — 100px • Reference — Her Royal Highness • Spoken — Your Royal Highness • Illustration — Royal monogram of Princess Sirivannavari • Illustration — Royal flag of Princess Sirivannavari

Princess Sirivannavari of Thailand was recorded at birth as Busyanambejra Mahidol. The authorities additionally record the headings Princess Sirivannavari Nariratana and Princess Sirivannavari Nariratana Rajakanya. Her recorded languages were Thai, English and French. Her recorded confession was Theravāda. She was the child of Vajiralongkorn and Sujarinee Vivacharawongse. Other recorded relations include Bajrakitiyabha, Princess Rajasarinisiribajra and Prince Dipangkorn Rasmijoti of Thailand. Recorded with the occupation writer. Recorded as badminton player, fashion designer, jockey and military officer.

• Knight of the Most Illustrious Order of the Royal House of Chakri (2019) • Dame Grand Cross of the Most Illustrious Order of Chula Chom Klao (2000) • Knight Grand Cordon of the Most Exalted Order of the White Elephant (2008) • Knight Grand Cordon of the Most Noble Order of the Crown of Thailand (2005) • Knight Grand Cross of the Most Admirable Order of the Direkgunabhorn (2006) • King Rama IX Royal Cypher Medal, First Class (1999) • King Rama X Royal Cypher Medal, First Class (2019)

• Hungary: • Commander's Cross with Star of the Hungarian Order of Merit (Civil Division) (19 March 2024) • France: • Grand Officer of the Legion of Honour (26 January 2026)

• Chulalongkorn University – honorary Doctorate in Fine and Applied Arts, in recognition of her design skill, advocacy of Thai craftsmanship, and her high-end fashion brand, Sirivannavari.