Vocal superstar Beyoncé is reportedly pregnant with her second child according to E! News.

The site revealed that several official sources confirmed the exciting news to them today and this information comes just days after the 'Halo' beauty was forced to cancel a concert in Belgium under doctor's orders.

While she cited dehydration and exhaustion as the reasons for the cancellation this week, many news sites ran stories suggesting she could be expecting another baby and E! now appears to have reinforced the speculation.

During her live show on May 15, Beyoncé told the audience she was also advised to call that performance off but decided to go ahead regardless as she didn't want to let her fans down.

At the MET Gala in New York earlier this month, she raised eyebrows after walking the red carpet in a custom-made Givenchy gown (pictured below) with a belt that covered her stomach. Pictures have also been taken of Beyoncé over the past few weeks at her Mrs. Carter gigs that show her with a more rounded stomach than usual (see above left).

Watch footage of the 2013 Met Gala red carpet arrivals here: