Representatives for the Pratts have not commented on Katherine’s pregnancy, People reported.
The exciting news comes shortly after Chris Pratt honored his wife Schwarzenegger Pratt on her 32nd birthday with a social media tribute.
“Happy birthday, honey! You are such a wonderful wife, mother, stepmother, and life partner,” Chris Pratt wrote on Instagram. “I simply can’t imagine how lost I’d be without you.
“You’re beautiful, tough as nails, reasonable, deeply thoughtful, extraordinarily smart, you’re a complete boss, eternally driven and you communicate like no other,” Chris Pratt added. “Thank you for everything.”
1 of 23
Photos: Chris Pratt through the years Here are some memorable photos of actor Chris Pratt through the years. (Alberto E. Rodriguez/Getty Images for Disney)
Photos: Chris Pratt through the years 2002: Actor Chris Pratt attends the WB Network's 2002 Summer Party at the Renaissance Hollywood Hotel on July 13, 2002, in Hollywood, California. (Robert Mora/Getty Images)
Photos: Chris Pratt through the years 2003: Actor Chris Pratt arrives at the 29th annual People's Choice Awards at the Pasadena Civic Center January 12, 2003, in Pasadena, California. (Jon Kopaloff/Getty Images)
Photos: Chris Pratt through the years 2004: Actor Chris Pratt and Amber Gold attend the premiere of "Mean Creek" at Arclight Cinemas on August 9, 2004, in Hollywood, California. (Mark Mainz/Getty Images)
Photos: Chris Pratt through the years 2005: Actor Steven Colbert, actor Chris Pratt, director Paul Dinello and actress Amy Sedaris of the film "Strangers With Candy" pose for portraits during the 2005 Sundance Film Festival on January 24, 2005, in Park City, Utah. (Carlo Allegri/Getty Images)
Photos: Chris Pratt through the years 2006: Actress Emily VanCamp and actor Chris Pratt pose inside at the Cinevegas opening night film "Strangers With Candy" at the Brenden Theatres inside the Palms Casino Resort on June 9, 2006, in Las Vegas. (Ethan Miller/Getty Images for CineVegas)
Photos: Chris Pratt through the years 2008: Actor Chris Pratt attends the film premiere of "Wanted" at the Mann Village Westwood Theater on June 19, 2008, in Los Angeles. (Frederick M. Brown/Getty Images)
Photos: Chris Pratt through the years 2009: Actor Chris Pratt and actress Anna Faris attend the Poolside Summer Party to celebrate the Malibu and Reef Check Partnership at a private residence on August 11, 2009, in Beverly Hills, California. (Michael Buckner/Getty Images)
Photos: Chris Pratt through the years 2010: Actress Anna Faris and husband Chris Pratt arrive at the launch of Target's & William Rast's Limited Edition Collection shopping event at Factory Place on December 11, 2010, in Los Angeles. (Angela Weiss/Getty Images)
Photos: Chris Pratt through the years 2011: Actor Chris Pratt (left) and actress Anna Faris arrive at the 63rd annual Primetime Emmy Awards held at Nokia Theatre L.A. LIVE on September 18, 2011, in Los Angeles. (Frazer Harrison/Getty Images)
Photos: Chris Pratt through the years 2012: Actors Chris Pratt (left) and Aubrey Plaza arrives at 14th annual Young Hollywood Awards presented by Bing at Hollywood Athletic Club on June 14, 2012, in Hollywood, California. (Alberto E. Rodriguez/Getty Images For Hollywood Life)
Photos: Chris Pratt through the years 2013: Actors Rashida Jones, Aziz Ansari, Aubrey Plaza, Marietta Sirleaf, Amy Poehler, Chris Pratt, Adam Scott, Jim O'Heir and Nick Offerman attend the NBC "Parks and Recreation" 100th Episode Celebration at CBS Studios - Radford on October 16, 2013, in Studio City, California. (Jason Kempin/Getty Images)
Photos: Chris Pratt through the years 2014: Actor Chris Pratt attends the premiere of Marvel's "Guardians of the Galaxy" at the Dolby Theatre on July 21, 2014, in Hollywood, California. (Kevin Winter/Getty Images)
Photos: Chris Pratt through the years 2015: Actor Chris Pratt attends the 87th annual Academy Awards at Hollywood & Highland Center on February 22, 2015, in Hollywood, California. (Jason Merritt/Getty Images)
Photos: Chris Pratt through the years 2016: Actors Jennifer Lawrence and Chris Pratt attend the photo call for Columbia Pictures' "Passengers" at Four Seasons Hotel Los Angeles at Beverly Hills on December 9, 2016, in Los Angeles. (Emma McIntyre/Getty Images)
Photos: Chris Pratt through the years 2017: Actor Anna Faris, Jack Pratt and actor Chris Pratt at the Chris Pratt Walk of Fame Star Ceremony on April 21, 2017, in Hollywood, California. (Jesse Grant/Getty Images for Disney)
Photos: Chris Pratt through the years 2018: Chris Pratt attends the 2018 MTV Movie And TV Awards at Barker Hangar on June 16, 2018, in Santa Monica, California. (Christopher Polk/Getty Images for MTV)
Photos: Chris Pratt through the years 2019: Katherine Schwarzenegger and Chris Pratt attend the Los Angeles World Premiere of Marvel Studios' "Avengers: Endgame" at the Los Angeles Convention Center on April 23, 2019, in Los Angeles. (Rich Polk/Getty Images for Disney)
Photos: Chris Pratt through the years 2019: Tom Holland and Chris Pratt of "Onward" took part in the Walt Disney Studios presentation at Disney’s D23 EXPO 2019 in Anaheim, Calif., on Aug. 24, 2019. (Alberto E. Rodriguez/Getty Images for Disney)
Photos: Chris Pratt through the years 2021: Sam Richardson (left), Yvonne Strahovski, Chris Pratt, Betty Gilpin and J.K. Simmons attend the premiere of Amazon's "The Tomorrow War" at Banc of California Stadium on June 30, 2021, in Los Angeles. (Matt Winkelmeyer/Getty Images)
