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Blake Lively and Ryan Reynolds attend The Metropolitan Museum of Art’s Costume Institute benefit gala celebrating on Monday, May 5in New York. The couple are expecting their first child.

Blake Lively’s secret is out!

The 27-year-old former “Gossip Girl” actress took to her lifestyle website Preserve Monday to reveal she and actor husband Ryan Reynolds are expecting a baby.

The pregnant starlet shared her first bump photo on the site in a post her team fittingly wrote about celebrating family.

“Preserve at its core is about family. ‘Family’ is the single word our founder, Blake built this home on,” the entry read.

“We have something for men, for women, for the old, but we realized, we don’t have anything for the new. With family on our mind, we looked to the origin of it all-to the women in our lives who are right there, at that special moment; at the creation of family.”

“Today we celebrate them. With food to fill their tummies (as if that needs more filling), presents to soothe their tired (and swollen) soles, toys to warm their baby’s souls, projects to provoke them, and decorations to inspire creativity and merriment in all,” the team continued with several photos of expectant moms with the final image being of Lively and her very visible growing tummy.

“We had too much fun with this. Because there’s so much to share, we break up our first ever Preserve Celebration into multiple parts. In the upcoming days we will bring even more treats and fun. The entire next month will be sprinkled with highlights for women in this exciting chapter of their lives. Congratulations to all the expecting mothers out there. And thank you for being a part of our Preserve family.”

Lively and Reynolds met on the set of  2011’s “The Green Lantern” and wed in Sept. 2012.

Since saying “I do,” the Hollywood pair have not been shy about voicing their want to have children together.

“I gotta get started,” she told the September issue of Marie Claire. “If I could spit out a litter of kids, I would.”

Reynolds, 37, opened up to Details magazine last year about having “a big family.”

“We both come from big families – my parents did four, Blake’s did five,” he described to the glossy. “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.”

Reynolds was previously married to actress Scarlett Johansson, who gave birth to daughter Rose with fiance Romain Dauriac  last month.