06/19/2007 at 04:00 PM EDT
She may only be four months pregnant, but Drea de Matteo has already noticed a dramatic change in her physique.
"I feel great," the 35-year-old actress told PEOPLE at the premiere of her new movie, Broken English,
on Monday. "I just feel fat, but I feel great."
The former Sopranos
star jokingly added: "I feel like I'm carrying the baby in my [behind], it's so big."
De Matteo, who is expecting a child
with her 28-year-old boyfriend, singer Shooter Jennings, admitted she tends to indulge her cravings "even when I'm not pregnant" – but said she's lately been eating an inordinate amount of Italian food.
"It's weird because I'm Italian and I never eat Italian food normally," she said. "I guess I'm getting back to my roots, getting ready to cook!"
And though she's only just entering her second trimester, De Matteo, who quit smoking when she found out she was pregnant, suspects she may have figured out the baby's gender. "We don't know what we're having yet," she said. "But I use 'she,' because I'm getting so fat, I think it's a girl!"