Royal wedding: Prince William and Kate congratulated
On Tuesday, the couple, both 28, revealed they would marry next spring or summer after the prince proposed while on holiday in Kenya in October.
The prince gave her his mother Diana's engagement ring - which he said he had carried in a rucksack for three weeks.
Prince Harry said he was delighted and that it was like gaining a sister.
The engagement has made front page headlines globally, with The Times describing the pair as "the new romantics".
The announcement ends months of speculation for the couple, who have been together for eight years after meeting while students at St Andrews University, Fife.
Speaking in a joint television interview, Prince William said giving Kate the distinctive sapphire and diamond engagement ring was his way of keeping his mother close; Kazinform cites BBC News.
See www.bbc.co.uk for full version.