Johnny Galecki is having a boy -- see the gender reveal paint party!

Johnny Galecki is going to have a son!

Over the weekend, the Big Bang Theory star and his girlfriend, Alaina Meyer, had a gender reveal party that got a little messy. 

To announce the gender of their first child, the couple decided to have a paint party of sorts with different shades of blue. By the end of the reveal, the parents-to-be were happily covered in paint.

"To all those who voted boy, you were right!" Meyer shared on her Instagram Story.

Galecki was also thrilled to share the news, captioning his pic from the party: "A day I’ll never forget."

Johnny Galecki Gender Reveal
Instagram Story
Johnny Galecki Gender Reveal
Instagram Story

The 44-year-old actor announced earlier this month that he was going to be a dad. 

"We are absolutely over the moon to announce that we will soon be welcoming a little one into this crazy and wonderful world," he gushed on Instagram. "We ask that you please respect our privacy during this celebratory time for us and our families. There truly is love out there for all. We hope ours is the ember of yours, as we feel yours is the ember of ours."

The baby news comes on the heels of the series finale of Galecki's hit CBS show, The Big Bang Theory.

14 PHOTOS
Johnny Galecki and girlfriend Alaina Meyer together
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Johnny Galecki and girlfriend Alaina Meyer together
NEW YORK, NEW YORK - MAY 15: Johnny Galecki and Alaina Meyer attend the Statue Of Liberty Museum Opening Celebration at Battery Park on May 15, 2019 in New York City. (Photo by Kevin Mazur/Getty Images for Statue Of Liberty-Ellis Island Foundation)
NEW YORK, NEW YORK - MAY 15: Johnny Galecki and Alaina Meyer arrive at the Statue Of Liberty Museum Opening Celebration at Battery Park on May 15, 2019 in New York City. (Photo by Jemal Countess/Getty Images for Statue Of Liberty-Ellis Island Foundation)
BEVERLY HILLS, CALIFORNIA - MAY 10: Johnny Galecki and Alaina Meyer attend the 26th Annual Race to Erase MS Gala at The Beverly Hilton Hotel on May 10, 2019 in Beverly Hills, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
BEVERLY HILLS, CALIFORNIA - MAY 10: Johnny Galecki and Alaina Meyer attend the 26th annual Race to Erase MS on May 10, 2019 in Beverly Hills, California. (Photo by Rich Fury/Getty Images for Race To Erase MS)
LOS ANGELES, CA - MARCH 29: Johnny Galecki and Alaina Meyer attend a basketball game between Charlotte Hornets and Los Angeles Lakers at Staples Center on March 29, 2019 in Los Angeles, California. (Photo by Kevork S. Djansezian/Getty Images)
SANTA MONICA, CA - JANUARY 13: Alaina Meyer, Johnny Galecki arrives at the The 24th Annual Critics' Choice Awards attends The 24th Annual Critics' Choice Awards at Barker Hangar on January 13, 2019 in Santa Monica, California. (Photo by Steve Granitz/WireImage)
SANTA MONICA, CA - JANUARY 13: Alaina Meyer and Johnny Galecki attend the 24th annual Critics' Choice Awards at Barker Hangar on January 13, 2019 in Santa Monica, California. (Photo by Emma McIntyre/Getty Images for The Critics' Choice Awards)
BEVERLY HILLS, CA - JANUARY 06: Johnny Galecki (L) and Alaina Meyer attend the 2019 InStyle and Warner Bros. 76th Annual Golden Globe Awards Post-Party at The Beverly Hilton Hotel on January 6, 2019 in Beverly Hills, California. (Photo by Matt Winkelmeyer/Getty Images for InStyle)
BEVERLY HILLS, CA - JANUARY 06: Alaina Meyer (L) and Johnny Galecki attend the 2019 InStyle and Warner Bros. 76th Annual Golden Globe Awards Post-Party at The Beverly Hilton Hotel on January 6, 2019 in Beverly Hills, California. (Photo by Kevin Mazur/Getty Images for InStyle)
SANTA MONICA, CALIFORNIA - NOVEMBER 11: Alaina Meyer and Johnny Galecki arrive at E! People's Choice Awards at Barker Hangar on November 11, 2018 in Santa Monica, California. (Photo by David Crotty/Patrick McMullan via Getty Images)
SANTA MONICA, CA - NOVEMBER 11: 2018 E! PEOPLE'S CHOICE AWARDS -- Pictured: Alaina Meyer and Johnny Galecki arrive to the 2018 E! People's Choice Awards held at the Barker Hangar on November 11, 2018 -- NUP_185068 -- (Photo by Emma McIntyre/E! Entertainment/NBCU Photo Bank via Getty Images)
SANTA MONICA, CA - NOVEMBER 11: 2018 E! PEOPLE'S CHOICE AWARDS -- Pictured: (l-r) Alaina Meyer and Johnny Galecki arrive to the 2018 E! People's Choice Awards held at the Barker Hangar on November 11, 2018 -- NUP_185069 -- (Photo by Todd Williamson/E! Entertainment/NBCU Photo Bank via Getty Images)
SANTA MONICA, CA - NOVEMBER 11: 2018 E! PEOPLE'S CHOICE AWARDS -- Pictured: (l-r) Actor Johnny Galecki and Alaina Meyer arrive to the 2018 E! People's Choice Awards held at the Barker Hangar on November 11, 2018 -- NUP_185071 -- (Photo by Charley Gallay/E! Entertainment/NBCU Photo Bank via Getty Images)
SANTA MONICA, CA - NOVEMBER 11: 2018 E! PEOPLE'S CHOICE AWARDS -- Pictured: Alaina Meyer and Johnny Galecki arrive to the 2018 E! People's Choice Awards held at the Barker Hangar on November 11, 2018 -- NUP_185068 -- (Photo by Emma McIntyre/E! Entertainment/NBCU Photo Bank via Getty Images)
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