What a pity that little care seems to be taken by some hairdressers to ensure that tiaras are centered above the bridge of the nose. The Duchess of Cornwall appears to have her tiara aligned with her hair parting:-
Queen Maxima's beautiful sapphire and diamond tiara was very slightly tilted:-
(Photo credit unknown)
And who could forget Mary Denmark's disaster with the first wearing of the "refurbished" wedding tiara!