Beyonce has been accused of wearing a prosthetic baby bump during her appearance at this year's MTV Video Music Awards.

The singer confirmed she was expecting her first baby with husband Jay-Z on stage at the MTV Video Music Awards (VMAs) in Los Angeles last month.

Mediatakeout.com have now accused the singer of wearing a 'fake bump' at the awards, quoting a 'top media insider' as their source.

The website reports: ''Our insider claims that Beyonce IS IN FACT pregnant. But that she is NOT in her second trimester - she's only a little more than 8 WEEKS pregnant. Tells the insider, "She wanted the announcement to be dramatic, so she made sure she had a baby bump.''

As previously reported on Gigwise, Beyonce's announcement that she was pregnant set a new Twitter record. She then showed her bump off again during her performance at the bash.

The announcement prompted a flood of tweeting, with a record 8,868 tweets per second – the most ever for a single event.

MTV VMAs 2011