Proclamation as Sultanah of Kelantan On 2 August 2022, Che Puan Nur Diana Petra was elevated to the rank of
Sultanah of
Kelantan with the style of
Her Royal Highness (
Duli Yang Maha Mulia) and the honorific prefix of
Sultanah before her given name by her husband, Sultan Muhammad V. As Sultanah of Kelantan, she often accompanies her husband at official and unofficial events.
Official appearances Her first public appearance as Sultanah of Kelantan occurred on 13 September 2022 where she received a visit by a group from the Pertubuhan Kerabat D’Raja Kelantan (PKDK) at the Kubang Kerian State Palace. On 27 September 2022, she attended a dinner in conjunction with the 8th Asean Traditional Textile Symposium at
Istana Negara, with the other royal consorts of the Malaysian States. In the same month, she and the then-Che Puan Mahkota (Crown Princess),
Che Puan Sofie Louise Johansson Petra received
Tengku Permaisuri Norashikin of Selangor for a high tea reception at Istana Kelantan in Jalan Wickham,
Kuala Lumpur. She attended the investiture ceremony in conjunction with Sultan Muhammad V's 53rd birthday celebration on 12 November 2022: during the ceremony, she stood and kissed her husband's hand as a symbol of the menjunjung duli (respect) ceremony. On 14 November 2022, she and her husband attended a dinner in conjunction with the 2022 Presentation ceremony of the Association of Administrative Officers (one of the celebrations for the Sultan's birthday) in Kota Bharu. On 18 April 2023, Sultanah Nur Diana Petra handed over a donation to the Kelantan Police Family Association (PERKEP) in Jalan Bayam,
Kota Bharu. On 30 September 2023, The Sultanah was present at the Kelantan Government Dinner Ceremony for the celebrations regarding the 54th birthday of Sultan Muhammad V, held at the Tok Guru Hall, in Kota Bharu. On 6 October 2023, she attended the "2023 Kelantan Flora Festival" in Kota Bharu with
Raja Perempuan Tengku Anis and Che Puan Sofie Louise Johansson Petra. In December 2023, the Sultanah and her husband received
Al-Sultan Abdullah Ri’ayatuddin Al-Mustafa Billah Shah and
Tunku Azizah Aminah Maimunah Iskandariah, the then-
Yang di-Pertuan Agong and then-
Raja Permaisuri Agong of Malaysia at Istana Kelantan in Jalan Wickham,
Kuala Lumpur. Also in December she welcomed and met with
Sultanah Nur Zahirah of Terengganu at Istana Kelantan in Jalan Wickham, Kuala Lumpur. On 8 March 2024, she participated in a 3-kilometre walk called the "2024 Srikandi Fun Walk" in Kota Bharu, in which Kelantan citizens also participated with her. On 25 March 2024, Sultanah Nur Diana Petra presented SSPN savings account donation awards to 50 Kelantanese students at Perdana Hotel,
Kota Bharu. The grant will benefit 300 students in Kelantan State. On 1 April 2024, The Sultanah was in
Jeli, Kelantan to attend the 2024 Endowment Ceremony in which she delivered a personal contribution to some ASNAF people of the Kelantan State. On 22 April 2024, she visited KB Permai Silvercraft in Kota Bharu. On 23 April 2024, the Sultanah visited the Cik Minah Songket structure, in Kota Bharu. This establishment is famous for the creation of Kelantan traditional songs. In the structure, the Sultanah also visited the exhibition hall. On 24 April 2024, she attended the 2024 Hi-Tea Ceremony Generasiku Sayang at Perdana Hotel, in Kota Bharu. She spoke to the guests after the ceremony. In September 2024, the Sultanah accompanied her husband at the investiture ceremony in conjunction with the Sultan's 55th birthday celebrations in
Kota Bharu. In October 2024, she and her husband received Prime Minister
Anwar Ibrahim and wife
Wan Azizah Wan Ismail at the Kubang Kerian State Palace. Also in October 2024, the Sultanah traveled to
Thailand to attend the "Islamic Fashion Festival" at the Mandarin Oriental Hotel in
Bangkok under the patronage of
Tunku Azizah Aminah Maimunah Iskandariah, Tengku Ampuan of Pahang: during the event, which also saw a fashion show by famous designers from
Malaysia and
Indonesia, she also met
Queen Suthida of Thailand. On 27 March 2025, the Sultanah attended the Grand Iftar Nur Kasih Ceremony with the Asnaf and Orphans organized by the Zainab Secondary School Alumni Association (SEMENZA) at Perdana Hotel in Kota Bharu: during the ceremony, she also presented the gifts to 6 representatives of the Asnaf and Orphanage groups. Additionally, on 29 September 2025, the Sultanah received in audience H.E. Mr. Juraj Koudelka, the Ambassador of the Czech Republic to Malaysia at the Kubang Kerian State Palace. She and her husband also attended a dinner presented by the Kelantan State Government at the Kompleks Kota Darul Naim in Kota Bharu. On 1 October 2025, the Sultanah and her husband attended the Garden Party (a Ruler with the People Ceremony) at the Dataran Warisan Sultan Muhammad IV Stadium in Kota Bharu. On 2 October 2025, she attended the "2025 Kelantan Flora Festival" at the Tengku Anis Municipal Park in Kota Bharu. On 4 October 2025, the Sultanah and her husband attended the decorated float parade at the Sultan Muhammad IV Stadium in Kota Bharu. On 11 October 2025, she and her husband attended the Majlis Orang-orang Besar Diraja Kelantan Dinner Presentation, one of the celebrations for the Sultan's birthday, at the Shangri-La Hotel in Kuala Lumpur. On 12 October 2025, the Sultanah and her husband attended the Justice of Peace Dinner Presentation, another celebration for the Sultan's birthday, at the Shangri-La Hotel in Kuala Lumpur. On 13 October 2025, she and her husband attended the Kelantan State Administrative Officers Association Dinner Presentation, also part of the Sultan's birthday celebrations, at the Shangri-La Hotel in Kuala Lumpur. On 5 November 2025, the Sultanah and her husband attended The Reception On The Occasion Of The National Day And The Armed Forces Day Of The Czech Republic at The Ritz-Carlton, Kuala Lumpur. On 7 November 2025, the Sultanah was in
Gua Musang, Kelantan to attend the Sultan of Kelantan Foundation Endowment Ceremony in which she delivered a contribution to 30 ASNAF people of Gua Musang District. On 11 November 2025, she attended the grand reopening of the Mouawad Boutique in
Dubai Mall. On 24 November 2025, the Sultanah alongside
Tunku Azizah Aminah Maimunah Iskandariah, Tengku Ampuan of Pahang attended the Islamic Fashion Festival (IFF) 2025 - Royal Charity Gala Dinner at the Mandarin Oriental Hotel in Kuala Lumpur. On 12 December 2025, she received in audience
Saifuddin Nasution Ismail, the Minister of Home Affairs at Istana Kelantan in Jalan Wickham, Kuala Lumpur. On 14 February 2026, the Sultanah and her husband participated in the 'Walkathon D'Raja Walk With Me 2026' at the Sultan Muhammad IV Stadium, Kota Bharu. On 15 February 2026, she attended the Endowment Ceremony to the poor and the disabled at the Kompleks Islam Jubli Perak Sultan Ismail Petra, Panji, Kota Bharu. == Social contribution ==