Radiant Naomi Watts Steps Out, Talks Baby Weight: "I'm Breast Feeding"

Naomi Watts ventured out to her first red carpet since giving birth four week ago to second sonSamuel Kai. Watts attended a screening and party for "Defiance," starring her fiance Liev Schreiber.

People asked her how she already had dropped her baby weight:

"I'm breast feeding," Watts, 40, told PEOPLE about her routine with Samuel Kai Schreiber. "And he's sucking it all out of me, it seems. And when the baby comes out, it's a lot of weight right there..."

"They're very different," Watts said of her two boys. "[Sammy]'s more fragile, in a way. But I don't know, maybe I've forgotten how small they are. [Alexander] is only 18 months old.

"And I've also got this big baby right here," she said, pointing to Schreiber at her side on the red carpet.

As for Schreiber's role in the film, Watts has raves. "I think he should be nominated, though he doesn't like when I say that."