Beyoncé Pregnant: Jay-Z Wife, Queen Of Pop Reportedly Pregnant With Second Child, Forced To Cancel Tour Stop Because Of Pregnancy?

Beyoncé is reportedly pregnant with her second child from husband Jay-Z, according to E! News.

Multiple sources confirmed exclusively to the site that the 31-year-old Queen of Pop is expecting another child, which would make Blue Ivy Carter a big sister. Beyoncé gave birth to Blue Ivy on Jan. 8, 2012.

The rumors of a second pregnancy first began when the Grammy-winning singer attended the Met Gala in New York City in a custom-made Givenchy gown that strategically hid her stomach. The way the dress fit her, along with the pattern of the dress, made it difficult to notice any alterations to her figure.

Beyoncé was forced on Tuesday to cancel her Mrs. Carter Show World Tour stop in Antwerp, Belgium after doctors suggested she rest because of dehydration and exhaustion. This only further fueled the pregnancy rumors.

The pop star told the following to ABC News recently:

"I would like more children. I think my daughter needs some company. I definitely love being big sister." 

It is unclear at this point if the pregnancy (if true) would affect Beyoncé's current tour.

E! News could not reach Beyoncé's representative for comment and Jay-Z's representative had no comment.

Beyoncé and Jay-Z married in 2008 after several years of dating. The two have collaborated together in the past on tours.