The great baby debate!

While showing off her sexy post-baby body at the premiere of her new film, The Odd Life of Timothy Green, in Hollywood on Monday, Jennifer Garner opened up about the possibility of having more children.

PHOTOS: Jennifer's life as a supermom

Garner, 40, and husband Ben Affleck, 39, welcomed their third child together, son Samuel, in February (joining daughters Violet, 6, and Seraphina, 3), and they're adjusting to being parents of three.

"It's absolute chaos!" the actress told Extra. "I really did not realize how much more work three was going to be than two."

PHOTOS: Jennifer's maternity style

While Garner was filming her new Walt Disney Pictures film, she says her husband took over caring for the kids.

"The fact that Ben wants another is true . . . " Garner revealed. But that doesn't mean she wants to have another baby. "I can tell you that would be a pretty uphill battle with me," the busy mom said. "I am not anticipating having any more kids!"

PHOTOS: Dads on duty!

Early in July, Us Weekly exclusively reported that the couple was debating having baby No. 4. Jen is happy with three now that she has a boy," a Garner pal told Us. "Ben wants four."

Affleck and Garner celebrated their seventh anniversary on June 29 and a source told Us "the marriage is rock solid."

This article originally appeared on Jennifer Garner: It's True Ben Affleck Wants to Have Another Baby