Did Beyonce's stomach really fold or was it a trick of fabric and light?

I wasn't going to put this on my blog, but let me do so and hear what you guys think. I don't know what blogger Sandra Rose has against Beyonce but here's what she wrote on her blog: 

Tweets are talking about Beyoncé’s prosthetic baby bump on last night’s Sunday Night HD. At first we couldn’t believe that she would actually wear her prosthetic on a show with HD — high definition — in the show’s title. But you know what they say about narcissists who think they are smarter than everyone else around them.

So there was Bey sitting down on the set — and there was her prosthetic baby bump, folding, crumpling and collapsing in full, vibrant high definition!

Luckily, the prosthetic is that memory foam type that bounced right back into shape. Rumor has it that Beyoncé is wearing a fake prosthetic while her unknown surrogate carries her baby to term.

Beyonce has no reason to fake a pregnancy, but what you think happened here? Did her stomach really fold in half as she sat down for the interview or was it a trick of fabric and light? Meanwhile she's said she's due in February.