While future husband Prince William was celebrating his “stag party,” almost-a-princess Kate Middleton was enjoying a relaxed “hen night” hosted by her Maid of Honor and sister Pippa.

Everyone’s been pretty mum on the details, but we’re told Middleton enjoyed a quiet celebration that’s so secretive, we can’t even get a good handle on the guest list. It’s suspected that Princess Beatrice, friend Alicia Fox-Pitt and Rose Astor were among the attendees.

Pippa managed to trick the media by booking four different locales to host the event, and no one’s revealing just where the bash went down. To get all the details we do have on the royal wedding, check out all our posts on the big event.