Beyonce Pregnant With Second Child, Blue Ivy Set to Become Big Sister

After weeks of speculation, several sources are confirming that Beyoncé and Jay-Z are expecting their second child just over a year after Blue Ivy was born.

Rumors over the possible pregnancy began spreading around the internet on 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." Sources confirmed to E!Online that the couple is expecting, but there were no other details immediately available including how far along the pregnancy is.

Speculation also arose after the Grammy award-winning artist walked the red carpet at the Met Gala fashion event wearing a Givenchy gown as onlookers claimed she was sporting a slight baby bump. Beyonce has confirmed before that she wants to have more children.

"I think my daughter needs some company. I definitely love being a big sister," Beyonce recently told "Good Morning America" co-host Amy Robach about having another baby. "At some point, when it's supposed to happen."

In January of 2012, Beyonce gave birth to her first child, Blue Ivy, and in February she opened up about motherhood in an interview with Vogue magazine.

"She's my road dog. She's my homey, my best friend. I feel like I have something that has grounded me so much more. Family has always been important. I've always had my mother and my father and my husband. But it's just ... Life is so much more than ... It's not defined by any of this," she told Vogue.

"I felt very maternal around eight months and I thought I couldn't become any more until I saw the baby," she explained.

"But it happened during my labor because I had a very strong connection with my child. I felt like when I was having contractions, I envisioned my child pushing through a very heavy door. And I imagined this tiny infant doing all the work, so I couldn't think about my own pain ... We were talking. I know it sounds crazy, but I felt a communication," she said.