Garner appeared on Live With Kelly & Michael and chatted about her husband’s new role as Batman. Garner said an unexpected side effect has her feeling like she is cheating on her husband.
"You know, he has put on 30 pounds of muscle and he's 8 percent body fat," Garner explained. "He looks pretty good. It's a little bit like, 'Whoa, who are you?' It feels like I'm having an affair. But I don't mind, I'm not complaining."
Affleck is currently filming Batman v Superman: Dawn of Justice, along with Henry Cavill as Superman. Affleck takes his career seriously and started hitting the gym to bulk up after winning the role. But the film wasn't his only role at the time and his Gone Girl crew was hoping he wouldn't grow too big too fast.
"I'm trying to keep him at the size he's at right now until he's done with us," Gone Girl costume designer, Trish Summerville, told E! News. "I'm sure he's working out but I think for him, he's probably a guy that builds up really quickly so I just kind of asked him if he can stay where he's at right now.
"He's a really big guy, like he's quite tall," Summerville added. "You don't realize how big he is. He kind of reads smaller on film than he does in real life."
Batman v Superman is expected to be out on March 25, 2016. Gone Girl opens in theaters on Oct. 3.
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