Beyonce took to Instagram this morning to announce that her family was "growing by two." She and Jay Z are expecting twins.
The news immediately caused an internet buzz, and Twitter reports that there were a half a million tweets in 45 minutes about the announcement, peaking at one point at 17,000 tweets per minute.
People magazine's story on the pregnancy reveal was the most-retweeted, with over 27,000 shares.
See the full story at Billboard.