It makes sense. With that many members of the royal family gathered together—and dressed up—on the very same night, it would be a shame not to extend the time together and toast to the success of the concert, but also the holiday season, when the cameras are off.
One question remains: If an after-party is in fact on the books, does this mean this year’s VIP guests (including Kate Winslet and Hannah Waddingham) get an invite, too? Fingers crossed.