Mila Kunis & Baby Daughter Wyatt (Courtesy of Twitter)

Mila Kunis, Ashton Kutcher & Baby Daughter Wyatt (Courtesy of Twitter)

Mila Kunis, Ashton Kutcher & Baby Daughter Wyatt (Courtesy of Twitter)

Mila Kunis, Ashton Kutcher & Baby Daughter Wyatt (Courtesy of Twitter)

Ashton Kutcher and Mila Kunis have officially named their baby daughter Wyatt Isabelle Kutcher. Kunis gave birth to Wyatt at 1.23am on October 1 in Los Angeles, California, and now the couple has filed the birth certificate. It is the first child for Kunis, 31, and Kutcher, 36, who announced their engagement in February (SplashNews)

Ashton Kucher and Mila Kunis react after being shown on the video board during the 'kiss me camera' feature during the game between the Oklahoma City Thunder and the Los Angeles Lakers at Staples Center on December 19, 2014 in Los Angeles, California (Getty)

Mila Kunis and fiance Ashton Kutcher go to breakfast together at Flake on September 17, 2014 in Venice, California (FameFlyNet)

Mila Kunis shies away from the cameras while leaving a yoga class in Los Angeles, California on August 28, 2014 (FameFlyNet)

Mila Kunis shies away from the cameras while leaving a yoga class in Los Angeles, California on August 28, 2014 (FameFlyNet)

Ashton Kutcher & Mila Kunis (Courtesy of Instagram)

Mila Kunis tells the world she is pregnant on 'ellen' May 8, 2014(Courtesy Of ellen)

Mila Kunis tells the world she is pregnant on 'ellen' May 8, 2014(Courtesy Of ellen)

Mila Kunis tells the world she is pregnant on 'ellen' May 8, 2014(Courtesy Of ellen)

Mila Kunis tells the world she is pregnant on 'ellen' May 8, 2014(Courtesy Of ellen)

Mila Kunis tells the world she is pregnant on 'ellen' May 8, 2014(Courtesy Of ellen)

Mila Kunis tells the world she is pregnant on 'ellen' May 8, 2014(Courtesy Of ellen)

Mila Kunis tells the world she is pregnant on 'ellen' May 8, 2014(Courtesy Of ellen)

Mila Kunis tells the world she is pregnant on 'ellen' May 8, 2014(Courtesy Of ellen)

Mila Kunis tells the world she is pregnant on 'ellen' May 8, 2014(Courtesy Of ellen)

Mila Kunis tells the world she is pregnant on 'ellen' May 8, 2014(Courtesy Of ellen)

Mila Kunis tells the world she is pregnant on 'ellen' May 8, 2014(Courtesy Of ellen)

Mila Kunis tells the world she is pregnant on 'ellen' May 8, 2014(Courtesy Of ellen)

Mila Kunis tells the world she is pregnant on 'ellen' May 8, 2014(Courtesy Of ellen)

Mila Kunis tells the world she is pregnant on 'ellen' May 8, 2014(Courtesy Of ellen)

Mila Kunis tells the world she is pregnant on 'ellen' May 8, 2014(Courtesy Of ellen)

Mila Kunis (Getty)

Mila Kunis (Getty)

Mila Kunis (Getty)

Mila Kunis and fiance Ashton Kutcher go to breakfast together at Flake on September 17, 2014 in Venice, California (FameFlyNet)

Mila Kunis and fiance Ashton Kutcher go to breakfast together at Flake on September 17, 2014 in Venice, California (FameFlyNet)

Mila Kunis and fiance Ashton Kutcher go to breakfast together at Flake on September 17, 2014 in Venice, California (FameFlyNet)

Mila Kunis and fiance Ashton Kutcher go to breakfast together at Flake on September 17, 2014 in Venice, California (FameFlyNet)

Mila Kunis and Ashton Kutcher kiss watching Los Angeles Dogers v St Louis Cardinals in the MLB at Dodger Stadium, Los Angeles on June 29, 2014 (SplashNews)

Mila Kunis, Marie Claire, July 2014 (Courtesy of Marie Claire)

Mila Kunis, Marie Claire, July 2014 (Courtesy of Marie Claire)

Mila Kunis and Ashton Kutcher take their dogs for a morning walk on May 12, 2014 in Los Angeles, California. Mila got into a verbal argument with a paparazzi on the scene (FameFlyNet)

Mila Kunis and Ashton Kutcher take their dogs for a morning walk on May 12, 2014 in Los Angeles, California. Mila got into a verbal argument with a paparazzi on the scene (FameFlyNet)

Ashton Kutcher and Mila Kunis seen during day 3 of 2014 Stagecoach: California's Country Music Festival at the Empire Polo Club on April 27, 2014 in Indio, California. (Photo by Frazer Harrison/Getty Images for Stagecoach)

Ashton Kutcher and Mila Kunis seen during day 3 of 2014 Stagecoach: California's Country Music Festival at the Empire Polo Club on April 27, 2014 in Indio, California. (Photo by Frazer Harrison/Getty Images for Stagecoach)

Ashton Kutcher and Mila Kunis seen during day 3 of 2014 Stagecoach: California's Country Music Festival at the Empire Polo Club on April 27, 2014 in Indio, California. (Photo by Frazer Harrison/Getty Images for Stagecoach)

Ashton Kutcher (L) and Mila Kunis attend day 1 of 2014 Stagecoach: California's Country Music Festival at the Empire Polo Club on April 25, 2014 in Indio, California. (Photo by Frazer Harrison/Getty Images for Stagecoach)

Ashton Kutcher (L) and Mila Kunis attend day 1 of 2014 Stagecoach: California's Country Music Festival at the Empire Polo Club on April 25, 2014 in Indio, California. (Photo by Frazer Harrison/Getty Images for Stagecoach)

Ashton Kutcher (L) and Mila Kunis attend day 1 of 2014 Stagecoach: California's Country Music Festival at the Empire Polo Club on April 25, 2014 in Indio, California. (Photo by Frazer Harrison/Getty Images for Stagecoach)

Ashton Kutcher (L) and Mila Kunis attend day 1 of 2014 Stagecoach: California's Country Music Festival at the Empire Polo Club on April 25, 2014 in Indio, California. (Photo by Frazer Harrison/Getty Images for Stagecoach)

Ashton Kutcher (L) and Mila Kunis attend day 1 of 2014 Stagecoach: California's Country Music Festival at the Empire Polo Club on April 25, 2014 in Indio, California. (Photo by Frazer Harrison/Getty Images for Stagecoach)

Ashton Kutcher and Mila Kunis on April 19, 2014 in Louisiana (Courtesy of Twitter)

Channing Tatum and Mila Kunis attend Warner Bros. Pictures' Â"The Big PictureÂ", an Exclusive Presentation Highlighting the Summer of 2014 and Beyond during CinemaCon, the official convention of the National Association of Theatre Owners, at The Colosseum at Caesars Palace on March 27, 2014 in Las Vegas, Nevada. (Photo by Michael Buckner/Entertainment/Getty Images for CinemaCon)

Mila Kunis in Beverly Hills, CA on March 26, 2014 (FameFlyNet)

Ashton Kutcher and Mila Kunis at the Lakers game on Tuesday March 4, 2014 at Staples Center in downtown Los Angeles, CA. (SplashNews)

Ashton Kutcher and Mila Kunis at the Lakers game on Tuesday March 4, 2014 at Staples Center in downtown Los Angeles, CA. (SplashNews)

Ashton Kutcher and Mila Kunis at the Lakers game on Tuesday March 4, 2014 at Staples Center in downtown Los Angeles, CA. (SplashNews)

Ashton Kutcher and Mila Kunis at the Lakers game on Tuesday March 4, 2014 at Staples Center in downtown Los Angeles, CA. (SplashNews)

Ashton Kutcher and Mila Kunis at the Lakers game on Tuesday March 4, 2014 at Staples Center in downtown Los Angeles, CA. (SplashNews)

Ashton Kutcher and Mila Kunis at the Lakers game on Tuesday March 4, 2014 at Staples Center in downtown Los Angeles, CA. (SplashNews)

Ashton Kutcher and Mila Kunis at the Lakers game on Tuesday March 4, 2014 at Staples Center in downtown Los Angeles, CA. (SplashNews)

Ashton Kutcher and Mila Kunis at the Lakers game on Tuesday March 4, 2014 at Staples Center in downtown Los Angeles, CA. (SplashNews)

Ashton Kutcher and Mila Kunis at the Lakers game on Tuesday March 4, 2014 at Staples Center in downtown Los Angeles, CA. (SplashNews)

Ashton Kutcher and Mila Kunis (Splashnews)

Cute couple and big Chicago Bears fans Mila Kunis and Ashton Kutcher grabbed some ice cream in the West Village in New York, NY after watching football at a nearby bar on September 23rd, 2012. The couple showed their support for the Bears by the wearing matching NYC Bears Fans shirts. (Courtesy Of FameFlyNet)

Ashton Kutcher and Mila Kunis (Splashnews)

Ashton Kutcher and Mila Kunis (Splashnews)

Ashton Kutcher and Mila Kunis (Fameflynet)

Ashton Kutcher & Mila Kunis (SplashNews)

Ashton Kutcher and Mila Kunis take their dogs for a morning walk on January 13, 2014 in Los Angeles, California (FameFlyNet)

Mila Kunis & Aston Kutcher (SplashNews)

Mila Kunis & Aston Kutcher (Getty)

Mila Kunis & Aston Kutcher

Mila Kunis & Aston Kutcher (Getty)