Former US Secretary of State Hillary Clinton has tweeted her congratulations to the Duke and Duchess of Cambridge:
Congratulations from across the pond to the Duke and Duchess! Wishing you the best of luck and a bit of advice: It Takes a (Royal) Village!
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Accompanied by the Duke of Edinburgh, the Queen will attend the opening ceremony of the fifth session in the Holyrood chamber.
Ms Leadsom has received the backing of Ian Duncan Smith, the former work and pensions secretary.
The former shadow work and pensions secretary is considered a more viable candidate than Angela Eagle, a Labour source has told ITV News.