The 28-year-old actress, who is pregnant with her second child, voiced her desire for a big family on Monday's episode of the Today show.
"Oh my gosh, yeah, [the plan is to expand]. I'm one of five kids; my husband's one of four," Lively said before joking, "We're officially breeders. You can go on our website and we will give you some of our children."
Lively confirmed news of her second pregnancy in May by debuting her baby bump at the Cannes International Film Festival. She and Reynolds are already parents to 18-month-old daughter James.
"She's always doing something fun and exciting," the actress said of her daughter. "She's the most fun, funny human being I've ever been around in my life."
"We're really good about keeping our family together. We don't work at the same time. We specifically weren't together on Father's Day. It was the first day that we've missed together," the star said.
"I was on a plane with my baby, James, and it's kind of torture these days because I'm on a plane and everywhere I look, every screen is my husband in a sex montage throughout the holidays with another woman because everybody wants to watch Deadpool," she added.
Lively will next star in The Shallows, which opens Friday.