In Photos: Japan's Princess Kako attends Vietnam Festival in Tokyo

Japan's Princess Kako, the second daughter of Crown Prince Akishino (Fumihito) and Crown Princess Kiko, attends the opening ceremony of the Vietnam Festival 2023 in Tokyo's Shibuya Ward on June 3, 2023. (Mainichi/Kaho Kitayama)

Japan's Princess Kako attends the opening ceremony of the Vietnam Festival 2023 in Tokyo's Shibuya Ward on June 3, 2023. (Mainichi/Kaho Kitayama)

Japan's Princess Kako, right, claps at the opening ceremony of the Vietnam Festival 2023 in Tokyo's Shibuya Ward on June 3, 2023. (Mainichi/Kaho Kitayama)

Japan's Princess Kako, right, observes a Vietnamese "ao dai" costume show at the opening ceremony of the Vietnam Festival 2023 in Tokyo's Shibuya Ward on June 3, 2023. (Mainichi/Kaho Kitayama)

Crowds line up in front of food stalls at the Vietnam Festival 2023 at Yoyogi Park in Tokyo's Shibuya Ward on June 3, 2023. (Mainichi/Hironobu Fujita)