E! News caught up with the actress last night at the L.A. premiere of her latest film, Dallas Buyers Club, and we asked whether hubby Ben Affleck has been practicing his Batman voice around the house yet.
"Not yet," Garner said, quickly adding, "But I'm excited!"
The actress, who was rocking a sleeveless navy dress that showed off her toned arms, said that she was on the carpet solo because Affleck is out of town working.
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The future Caped Crusader's latest project, David Fincher's adaptation of the Gillian Flynn bestseller Gone Girl, started shooting in Missouri last month. 20th Century Fox announced this week that the film will be in theaters Oct. 3, 2014.
Garner also recently offered her opinion about the extreme amount of weight that Matthew McConaughey shed to play a man dying of AIDS in Dallas Buyers Club, a real-life story about a homophobic womanizer who contracts the disease and gets active in smuggling illegal but helpful anti-viral meds into the U.S. from other countries.
"I hated it," she told Yahoo! Movies. "I hated seeing Matthew so—I mean, he looked ill. He looked legitimately really, very ill."
"I was going around and people were going, 'Hey, are you feeling all right?'" McConaughey told People. "But then I hit 135 pounds. I ran into somebody and they didn't just ask if I was all right, they said, 'My God, we need to get you some help.' And I thought, 'There we go. That's the perfect spot.'"
Watch the clip to see what else Jen had to say and tune into E! News tonight at 7 p.m. & 11:30 p.m. for more coverage of the Dallas Buyers Club premiere!