NUKU'ALOFA, TONGA - JULY 4: Queen mother Halaevalu Mata'aho, mother of King Tupou VI of Tonga is seen at the Free Wesleyan Church during the official coronation ceremony on July 4, 2015 in Nuku'alofa, Tonga. Tupou VI succeeds his brother, King Tupou V, who passed away in 2012. (Photo by Edwina Pickles/Fairfax Media/Getty Images)

NUKU'ALOFA, TONGA - JULY 4:  Queen mother Halaevalu Mata'aho, mother of King Tupou VI of Tonga is seen at the Free Wesleyan Church during the official coronation ceremony on July 4, 2015 in Nuku'alofa, Tonga. Tupou VI succeeds his brother, King Tupou V, who passed away in 2012. (Photo by Edwina Pickles/Fairfax Media/Getty Images)