The 38-year-old entertainer is expecting her first child with boyfriend actor Steve Kazee according to multiple reports. Dewan has a daughter, 6-year-old Everly, with her ex-husband, Channing Tatum, who she split from back in April 2018 after nearly nine years of marriage. This will be 43-year-old Kazee's first child.
"We are beyond overjoyed and couldn’t be happier to be expanding our family!" the couple, who was first photographed together in October 2018, told Peopleof their happy news.
Since making her relationship with Kazee Instagram official back in June, Dewan has started sharing pics of her beau on social media, documenting their vacations and sweet times together.
When ET caught up with Kazee in December, he said that he was "very happy" during the holiday season.
"I'm very happy at the moment, it's a good holiday right now. It's a good Christmas this year," he said. "You know, it's a very good holiday this year. I've had my birthday -- Oct. 30 -- so I get sort of Halloween, Thanksgiving, Christmas, it's been perfect this year and that's all I can say."
As for Dewan telling ET that she was "very happy" back in November, Kazee insisted that "she's a very happy person in general, I think... I can't take any credit."
Steve Kazee out and about
Steve Kazee out and about
CHICAGO, IL - MARCH 28: (L-R) Jordan Fisher, Steve Kazee and Michael Arden pose at The Opening Night After Party for the Broadway bound musical based on the iconic film 'Pretty Woman' at Macy's Walnut Room on March 28, 2018 in Chicago, Illinois. (Photo by Bruce Glikas/Bruce Glikas/WireImage)
NEW YORK, NY - JANUARY 22: Steve Kazee and Samantha Barks pose at a photo call for the new Broadway bound musical based on the hit iconic film 'Pretty Woman' at The New 42 Studios on January 22, 2018 in New York City. (Photo by Bruce Glikas/Bruce Glikas/WireImage)
BLINDSPOT -- 'Balance of Might' Episode 310 -- Pictured: Steve Kazee as Clem -- (Photo by: Barbara Nitke/NBC/NBCU Photo Bank via Getty Images)
BEVERLY HILLS, CA - NOVEMBER 30: Steve Kazee arrives at the Opening Night of 'Merrily We Roll Along' at the Wallis Annenberg Center for the Performing Arts on November 30, 2016 in Beverly Hills, California. (Photo by Jennifer Lourie/Getty Images)
BUENA PARK, CA - SEPTEMBER 30: Actor/singer Steve Kazee attends the Knott's Scary Farm Black Carpet Party at Knott's Berry Farm on September 30, 2016 in Buena Park, California. (Photo by Tara Ziemba/Getty Images)
NEW YORK, NY - MARCH 23: Steve Kazee and Alex Brightman pose backstage at the hit musical 'School of Rock' on Broadway at The Winter Garden Theatre on March 23, 2016 in New York City. (Photo by Bruce Glikas/Bruce Glikas/FilmMagic)
NEW YORK, NY - MARCH 06: Actor Steve Kazee attends the 'Eclipsed' Broadway Opening Night at the Golden Theatre on March 6, 2016 in New York City. (Photo by Mark Sagliocco/FilmMagic)
NASHVILLE - 'If I Could Do It All Again' - Luke and Riff are excitedly planning their upcoming tour, but Luke soon realizes he may have moved too quickly in the decision to have Riff (played by Tony Award-winning actor, singer, musician Steve Kazee) on the road again. Meanwhile, Deacon and Frankie clash about Vita, with Frankie making a damaging decision that could change everything, on 'Nashville,' WEDNESDAY, MARCH 30 (10:00-11:00 p.m. EDT) on the ABC Television Network. Photo by Mark Levine/ABC via Getty Images)
NASHVILLE - 'How Does It Feel To Be Free' - A familiar face is back on the Nashville music scene when Luke recruits his old friend Riff Bell (played by Tony Award-winning actor, singer, musician Steve Kazee) to join him on tour. While the duo excitedly starts planning Riff's return to the stage, newcomer Vita arrives at The Beverly, but while she convinces Deacon and Rayna she deserves a shot, Frankie has his doubts. In the end, more questions than answers remain. Radio personality Buzz Brainard also guest stars as himself, on 'Nashville,' WEDNESDAY, MARCH 23 (10:00-11:00 p.m. EDT) on the ABC Television Network.(Photo by Mark Levine/ABC via Getty Images)'nSTEVE KAZEE, WILL CHASE
LOS ANGELES, CA - DECEMBER 11: Steve Kazee attends SPARKLE: an All-Star Holiday Concert to benefit The Actors Fund At Rockwell Table & Stage on December 11, 2014 in Los Angeles, California. (Photo by Justin Baker/WireImage)
HOLLYWOOD, CA - JULY 17: Actor Steve Kazee arrives at the Los Angeles opening night of the musical 'Once' at the Pantages Theatre on July 17, 2014 in Hollywood, California. (Photo by Jennifer Lourie/FilmMagic)