'Deadpool' Trailer & Cast: Ryan Reynolds Greets Daugther James Happy First Birthday in Funny Post -- Read Here!

"Deadpool" star Ryan Reynolds posts a sweet message for the first birthday of her daughter, James, with "Gossip Girl" actress Blake Lively, Just Jared reports.

Last year in January, it was reported that Lively and Reynolds welcomed their first child, but there was no confirmation on baby James' exact date of birth. Now, because of Ryan's greeting on Twitter, the celebrity dad has revealed her daughter's birthday.

“Happy birthday to my baby girl! Sad I lost my virginity. But thankful I have a daughter,” the 38-year-old dad said on the Twitter post.

Page Six reported that Lively gave birth to baby James in their home in Bedford, New York. According to the news outlet, the child arrived before the New Year of 2015, which is earlier than Lively's expected due date. The celebrity couple married in 2012.

Happy birthday to my baby girl! Sad I lost my virginity. But thankful I have a daughter.

— Ryan Reynolds (@VancityReynolds) December 16, 2015

Lively sat down with Us Weekly in 2014, disclosing that having a baby girl is "something that [she's] always wanted." Lively further said, "I never knew what I wanted to do for a living but I knew I wanted to have a lot of kids because I had come from a big family, so it was always important to me."

She also said that Reynolds was always supporting her as they become parents. 

Meanwhile, "Deadpool" fans will be treated with some Christmas cheer as 20th Century Fox will be holding 12 Days of Deadpool, a 12-day celebration for the highly anticipated film and will end upon the release of a new trailer, per ScreenRant.

Reynolds, who plays the R-rated superhero, has been busy sharing on social media the new releases about "Deadpool" for the 12-day celebration of the film. For the first four days, fans were treated with a homage clip to the Christmas classic "Home Alone" featuring the funny superhero thinking of an outrageous plan.

#12DaysOfDeadpool just got real, ya filthy animals. @DeviantArt pic.twitter.com/CdY5qAL3TQ — Ryan Reynolds (@VancityReynolds) December 16, 2015

People also released a 3D poster for the movie while Empire Magazine posted a photo of Deadpool together with a funny Christmas list to Santa.

Looks like we're about to make someone's Christmas wish come true... #12DaysOfDeadpool pic.twitter.com/ObPjVdM5U3 — Empire Magazine (@empiremagazine) December 17, 2015

For the next few days, the 12 Days of Deadpool will reportedly feature more exclusive revelation from the film site and Reynolds himself. ScreenRant also speculates that there might also bea preview on the eve of the new trailer's release.

"Deadpool" will hit theaters on Feb. 12, 2016.