Credit: Gregg DeGuire/FilmMagic; Jordan Strauss/WireImage

Before giving birth in March, stylist Rachel Zoe was one of the most fashionable pregnant women in Hollywood -- so it comes as no surprise that her client Jennifer Garner is too.

"Rachel is still determined not to put me in maternity clothes," Garner, 39, told reporters at Audi's AFI Fest screening of Butter at Grauman's Chinese Theatre in Hollywood Sunday.

"I think she was so little when she was pregnant, she didn't wear them. Sooner or later, she is going to have to put me in them!" Garner laughed. "Eventually that's going to happen, but so far she's gotten her way!"

The Lanvin-clad actress -- currently expecting her third child with husband of six years Ben Affleck, 39 -- added that she has about "four months to go" until her due date.

"Jen has always wanted three kids," a source recently told Us Weekly. "This was her plan all along."