Beyonce Knowles is set to give birth this month.

The 'Countdown' singer had previously revealed she and husband Jay-Z would welcome their first child into the world in February but a new video clip has surfaced online dating back from September in which she says she is "six months pregnant".

In the behind-the-scenes video, Beyonce holds up an copy of the New York Daily News newspaper which is carrying the headline 'Oh Baby' and says: "Hello, it's September 23. Oh baby! Oh baby! Oh baby! Oh baby! This was on the cover of the Daily News

"Right now I'm actually shooting the video for 'Countdown' and I'm six months pregnant, pretending that my stomach is flat in body suits. But thank god you can't really tell from The Front, but when I turn to the side . oh baby! Oh baby!"

Beyonce, 30, has previous spoken of how she feels it is the right time for her to have a baby now as she has achieved so much in her music career.

She said: "My husband and I have been together for 10 years - all of my 20s - and I just feel like it's time and I'm very grateful that God has blessed me with the biggest gift any human being can have. I think because I've accomplished a lot of things for myself and I really know who I am, I didn't rush into anything. If it's any time, right now is the time, and I'm so happy."