Beyonce: It Was “Harder to Breathe” Performing While Pregnant

With her baby due this February, Beyonce's bump is completely bonafide and undeniable these days -- but, back in mid-August, when the superstar's pregnancy was still under wraps, but she worried the evidence was already obvious.

Beyonce performed four sold-out, intimate shows at NYC's Roseland Ballroom, and strutted her stuff in a skimpy, sequined mini-dress with a strategically placed bib over her still-tiny belly. (She announced the baby news Aug. 28 at the MTV Video Music Awards.)

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"The whole time I definitely was thinking, 'Everyone knows, everyone can see,"' Beyonce, 30, said Sunday night during an onstage interview at NYC's Paris Theater, where she hosted a special screening for Live at Roseland, a concert film DVD documenting those shows.

The "Love on Top" singer also explained why she booked the quartet of shows at the tiny venue: With her baby on the way, the concerts would be her only opportunity in 2011 to perform songs from her 4 album for fans. And the mom-to-be certainly suffered for her art, too, she said.

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"When you're pregnant, it's a little bit harder to breathe, so it was hard doing all the choreography and singing at the same time," said Beyonce, who dressed up her increasingly huge bump in a brown and gold Roberto Cavalli gown.

The DVD will also be a great memento for the child, Beyonce's first with husband Jay-Z; Beyonce hopes the movie (featuring tons of home footage from rehearsals, Beyonce's childhood, even a glimpse of her top-secret wedding gown) will impress her little one.

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"[I hope he or she will say] I can't believe I was in that belly!" joked the star.