Beyoncé Pregnant With Baby No. 2: Russell Simmons, Andy Cohen and More React on Twitter

Celebs are taking to social media to send congrats to the proud parents and big sis-to-be Blue Ivy

Beyoncé is officially pregnant with her second child!

Multiple sources exclusively confirm to E! News the "Bow Down" singer is expecting baby No. 2 with hubby Jay-Z, and the Twitterverse contines to react with excitement.

But we're not the only ones jumping for joy over Bey's bun in the oven! Celebs are also taking to social media to send congrats to the star parents and big sis-to-be Blue Ivy. Here's what they're saying: 

Russell Simmons: "Congratulations Jay-Z & Beyonce..."

Andy Cohen: "hey ‪@beyonce ---- MAZEL on your #FierceFetus!