Credit: Fame Pictures

Could Jessica Biel be more ready for motherhood than she thinks?

In an interview on The Graham Norton show Saturday, the actress opened up about her role in her latest flick, New Year's Eve (out December 9), where she plays a very pregnant mother.

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Going on set as an expectant character was surprisingly enjoyable for the slim-bodied actress, because she didn't have to watch her calorie intake like normal.

"It was so good! I had a [pregnant belly] suit on that went from here to here (across belly) and I had the biggest boobs that hung to here," the actress told the U.K. talk show host. "And I ate whatever I wanted -- it was great!"

Biel, 29, in just one star in the A-list ensemble cast of the romantic comedy from the producers of Valentine's Day. Ashton Kutcher, Robert DeNiro, Katherine Heigl, Seth Meyers, Sofia Vergara, Zac Efron, Lea Michele, Josh Duhamel, Michelle Pfeiffer, Alyssa Milano and Sarah Jessica Parker also star.