Pregnant Beyoncé at the MTV Video Music Awards.

Beyoncé has announced that she is expecting her first baby at the MTV Video Music Awards 2011.

Beyoncé, 29, made the surprising announcement by revealing her baby bump on the red carpet at the MTV Video Music Awards on Sunday night.

She worn a long orange dress by Lanvin and clutched her visible bump while was telling the press: “I have a surprise!”

Beyoncé revealed her baby bump on the red carpet at the MTV Video Music Awards on Sunday night

Beyoncé didn’t let her pregnancy prevent her from bringing the house down with an energetic performance.

The singer cheered on her husband Jay-Z, who performed new single Otis with Kanye West, before taking to the stage herself.

Beyoncé took the stage in a purple glittery blazer and black trousers by Dolce & Gabbana and said:

“I want you to feel the love that’s growing inside of me.”

After she performed Love On Top, which attracted a standing ovation from the audience, Beyoncé ripped open her jacket and proudly rubbed her baby bump.

Beyoncé ripped open her jacket and proudly rubbed her baby bump after she performed Love On Top

In the next moment, cameras moved on the audience, where Jay-Z was beaming, as his friend Kanye West jumped up and down, smacking the future father on the back and shaking him.