Queen B marked the occasion with a photo album on her website, complete with wedding veils, fully-submerged underwater shots and pictures of her first pregnancy which resulted in daughter Blue Ivy in January 2012.
With images lending themselves to the meme generation, the Internet responded as could be expected:
A number of celebrity friends of the powerful music couple expressed their joy at the announcement, including singers Rihanna and Rita Ora, and model Chrissy Teigen.
Actress Bryce Dallas Howard and model Hailey Baldwin also showed their pleasure.
As for the unborn twins, how they will react to the 'artistic' photos later in life remains to be seen.