Blue Ivy is going to be a big sister. After rampant rumors, it looks like Beyoncé and Jay-Z are expecting a second child.

Multiple sources confirm to E! News that Beyoncé is pregnant with baby #2. However, no official announcement has been made by the couple.

There were whispers of the 31-year-old singer’s pregnancy when she walked the red carpet at the Met Gala wearing a custom-made Givenchy gown that covered her stomach and hid her silhouette.

The speculation only increased after she was forced to cancel her concert in Antwerp, Belgium. Doctors ordered her to get some rest “as a result of dehydration and exhaustion.”

But she returned to the stage the next day, apologizing to her fans. “I’ve never postponed a show in my life,” she said in a handwritten note. “It was very hard for me.”

Bey recently expressed her desire to expand her family. “I would like more children. I think my daughter needs some company. I definitely love being big sister,” she told ABC News.

Beyoncé is set to launch the U.S. leg of “The Mrs. Carter Show World Tour” in L.A. on June 28. It’s unknown how the pregnancy will affect her touring plans.