After 16 months of secrecy, Ryan Reynolds has finally revealed the name of his fourth child with wife Blake Lively.

The actor, 47, made the announcement on stage at the Deadpool & Wolverine premiere in New York City on Monday night, where he thanked his wife, 36, and their four children, naming each of them.

The fourth baby’s name had been a secret since they welcomed their child in February 2023.

Reynolds revealed that their fourth child’s name is Olin, of Scandinavian origin, meaning “ancestor’s heir.”

Although Olin is typically a male name, the couple has not yet revealed the gender of their fourth child.

Reynolds and Lively are also parents to daughters James, nine, Inez, seven, and Betty, four.

Blake announced her fourth pregnancy on the red carpet in September 2022 while at the 10th Annual Forbes Power Women’s Summit in New York City; seen on September 15, 2022 – revealing her pregnancy on the red carpet

Reynolds expressed gratitude to his family, saying, “I want to thank my wife Blake, who is here. I want to thank my kids James, Inez, Betty, Olin, who are here.”

He continued, “I hope that, if I’m lucky, this moment will be the most traumatic thing – that is, the contents of this movie – that happens in your wondrous lives.”

Blake stunned in a dark red jumpsuit at the premiere, channeling Reynolds’ Deadpool character.

She posed with her friend Gigi Hadid, who wore a yellow look, consisting of a crop top and skirt, by Miu Miu, inspired by Wolverine.

The couple shared a loving glance as they stayed close to each other at the premiere.

Blake looked amazing in a dark red jumpsuit for the premiere on Monday night – channeling Ryan’s Deadpool character

Blake posed up a storm with her good friend Gigi Hadid, who channeled Wolverine in yellow look – consisting of a crop top and skirt – by Miu Miu

Blake and Ryan pictured with Gigi and his co-star Hugh Jackman

Blake and Ryan looked at each other lovingly as they stayed close to each other at the premiere

The couple never publicly announced the birth of their fourth child, instead sharing a snap of Blake wearing fitted jeans and a top with no baby bump on February 12, 2023, confirming the arrival of their fourth child.

Blake hinted at the birth in the caption, writing, “Puppy Bowl Sunday 2023. Been busy.”

Blake first announced her fourth pregnancy on the red carpet in September 2022 while at the 10th Annual Forbes Power Women’s Summit in New York City.

She also shared a slideshow of snaps of herself during her pregnancy, featuring her best friend Taylor Swift.