Beyoncé is expecting her second child with husband, rapper Jay-Z, according to E! News and other sources.
The couple already have one daughter, Blue Ivy.
The "Countdown" singer sparked pregnancy rumors when she canceled a performance in Antwerp, Belgium, a stop on her current "Mrs. Carter World Tour."
She said doctors had ordered her to rest due to "dehydration and exhaustion."
Those rumors were compounded by her appearance last week at the Met Gala in New York where she was spotted wearing a Givenchy dress that has been cinched at the waist.
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The singer recently told ABC News she "would like more children" and that daughter Blue Ivy "needs some company."
Neither Beyoncé nor Jay-Z could not be reached for comment, according to E! News.
Beyoncé is slated to wrap up her world tour in early August with a performance at the Barclays Center in Brooklyn.