There's no doubt Princess Eugenie's wedding is an event you'd be thrilled to receive an invite for, but even so, it looks like two guests of honour will forgo some of the festivities.
Prince Harry and Duchess Meghan might not experience Eugenie and her hubby-to-be Jack Brooksbank's royal wedding in all it's glory, and the reason for it is surprisingly close to home.
Meghan and Harry are sure to attend their cousin's wedding ceremony at St George's Chapel in Windsor on Friday, the exact place the pair took their own vows back in May. They are also expected to attend a wedding lunch and night time reception on Friday evening.
However, Marie Claire reports the Duke and Duchess of Sussex will miss the reception held for Eugenie and Jack the following day in order to start making tracks to Australia for their royal tour!
The Prince and Duchess will fly into Sydney on Tuesday, October 16, where they will commence their week-long visit to the land Down Under.
While in Australia, the pair will be getting the full experience by attending beach yoga, holding koalas, climbing the harbour bridge, riding a tram and enjoying a decent flat white!
Among the Aussie traditions, one of the most important parts of the couple's tour will be attending the Invictus Games, which were founded by Prince Harry himself for injured and sick armed service personnel and veterans.
Participants take part in sports including wheelchair basketball, indoor rowing and sitting volleyball.
This will mark Prince Harry and Meghan Markle's first official royal tour as husband and wife and is set to garner global interest.
WATCH: Prince Harry and Meghan Markle go public at The Invictus Games:
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But while Harry and Meghan prepare for their big trip Down Under, Princess Eugenie and her betrothed will continue their wedding celebrations.
The pair's wedding celebration is set to span over two days, with an afternoon party including "Everything from dodgems to funfair rides, as well as plenty of cocktails," an insider told The Sunday Times.
And even if Harry and Meghan can't come to all the festivities, the guest list will be no less star studded.
Kate Moss, the Beckhams and Naomi Campbell and among those expected to attend.
A source also told the Mail that Ellie Goulding and Robbie Williams will perform during the celebrations.
The wedding itself will be televised by ITV, with the live coverage from inside the chapel being streamed by Channel 7 for Australian audiences.