Blake Lively and Ryan Reynolds welcomed a baby in December, Peopleconfirms.
The 27-year-old actress reportedly gave birth in Bedford, NY.
Lively first announced her pregnancy on Oct. 6 through her website Preserve. She has been one of the most stylish pregnant women, though she admitted to ET at the God's Love We Deliver Golden Heart Awards: "It's very different getting dressed with a watermelon as a stomach."
PHOTOS: Blake Lively's Fashionable Pregnancy
This is the first child for Blake and Ryan, 38, who married in 2012.
Last August, Blake said she couldn't wait to have children. "I gotta get started. If I could spit out a litter of kids, I would," she told Marie Claire at the time.
2015 will be a big year for celebrity babies. Check out which stars are expecting in the video below.