(E! News)

Looks like Blue Ivy is going to be a big sis!

That's right! Superstar supermom Beyonce is expecting her second child with hubby Jay-Z, multiple sources have exclusively confirmed to E! News.

The news follows lots of speculation that the singer was pregnant, even as the couple remained tight-lipped about their growing-family.

Rumors first began that the Grammy winner was pregnant when earlier this month, she walked the red carpet at the Met Gala wearing a custom-made Givenchy gown that deftly concealed her stomach, its bodice cinched high above the waist just as its intricate pattern made it difficult to discern any change in her silhouette.

Speculation then continued Tuesday after Beyoncé was forced to cancel her Mrs. Carter Show performance in Antwerp, Belgium, after doctors advised her to rest "as a result of dehydration and exhaustion." The 31-year-old recently spoke out about the possibility of giving 1-year-old Blue Ivy a sibling, telling ABC News that she "would like more children" and explaining that she thinks her daughter "needs some company."

Congrats to the happy family!