"The story is 100% false," Lively's rep tells Us Weekly. "Blake is not pregnant."
The Gossip Girl alum secretly married the R.I.P.D. actor, 36, in September 2012 after meeting on the set of 2011's The Green Lantern. The couple has lived a relatively private life since their wedding, but Reynolds opened up in the August 2013 issue of Details about his dreams of having a "big family" with Lively . . . one day.
"We'd love to have a big family," the said. "We both come from big families -- my parents did four, Blake's did five. A lot of people say it's crazy, but we'll only know when we're there, you know? We'll walk through that fire pretty happily, I think."
As the youngest of four brothers, Reynolds, who was previously married to Scarlett Johansson from 2008 to 2011, does seem to be hoping he'll have a baby girl.
"I'm terrified that I'm genetically predisposed to only having boys. That's frightening," he admitted. "By the time I was 10 years old, and I'm not exaggerating, I knew how to patch drywall. There's nothing my brothers and I didn't put a hole in. We turned our home into a Wiffle house. That's something I'm not looking forward to."