Belgium's King Philippe and Queen Mathilde are the latest royals to confirm their attendance at King Charles's coronation on 6 May.
But on Friday 5 May, the Belgian monarch will be joined by his 21-year-old daughter, Princess Elisabeth, Duchess of Brabant, at the pre-coronation reception at Buckingham Palace.
While the palace has not confirmed which British royals will be at the bash, could this be the opportunity for Prince George to attend his first-ever royal reception?
The Prince and Princess of Wales's nine-year-old son is set to have a starring role at the coronation ceremony as one of his grandfather's pages of honour. Here's everything you need to know about the coronation as we countdown until the big day...
George has upped his public appearances in the past year, with the Prince and his younger sister, Princess Charlotte, seven, accompanying their parents to Cardiff last summer, and the young royals attending their great-grandmother Queen Elizabeth II's state funeral. George has also attended football and rugby matches with William and Kate.
There's a possibility we could see George at the reception, given that many European heirs will be in attendance, including Princess Elisabeth and Princess Catharina-Amalia of The Netherlands.
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It's likely that many of the heirs who have RSVP'd for the coronation will also be at the reception, including Crown Prince Frederik of Denmark and Crown Princess Victoria of Sweden.
However, given George's young age and the fact that he already has a major role at the coronation ceremony, royal fans may have to wait a while for the Prince's debut at a palace reception.
The coronation service on Saturday 6 May will be followed by the Big Lunch and a star-studded concert at Windsor Castle on Sunday 7 May. Bank Holiday Monday has been billed as The Big Help, a campaign which aims to encourage people to volunteer in their local community.