The Duke and Duchess of Sussex teamed up with WHO Director-General Dr Tedros Adhanom to sign the letter which called on the world's leaders to "vaccinate the world". But the couple are now being mocked with Twitter user calicoolbreeze1 labelling them "a retired prince and a retired actress" and Will Master saying "Americans don't care" about royal titles.

       But supporters have come out to defend the couple saying "it's the way they should be addressed" out of "respect".

       In the open letter, Harry and Meghan claim promises of vaccine donations from nations are not reaching the globe's most vulnerable.

       READ MORE: Meghan Markle and Prince Harry wade into politics AGAIN with new letter to G20 leaders | Royal | News | Express.co.uk

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