Celebrity Celebrities You Forgot Were In-Laws Forget six degrees of separation, did you know that these famous stars were related by marriage? By Andrea Wurzburger Updated on June 23, 2022 02:30 PM Share Tweet Pin Email Trending Videos 01 of 16 Chris Pratt and Arnold Schwarzenegger Katherine Schwarzenegger Instagram On June 8, 2019, Pratt wed Katherine Schwarzenegger — daughter of Arnold and ex-wife Maria Shriver. Not only did that make him The Governator's son-in-law, but also brother-in-law to Katherine's siblings, including brother Patrick, who stars with Pratt in the new series The Terminal List (did you follow all that?). "I remember when Chris said, 'Hey you know there's this young role, Donny Mitchell, you'll be the youngest in the platoon. But if you want to get this role, I need you to go and try to get into character and really get this,' " Patrick explained of his BIL's help snagging the job on a June 2022 episode of Jimmy Kimmel Live! 02 of 16 Mark Ronson and Meryl Streep Bruce Glikas/Getty In 2021, the producer married actress Grace Gummer ... daughter of one Meryl Streep. He even got official approval from the Oscar-winning mom when he met her, along with Gummer's dad Don, earlier in the year. Gummer married into a famous family, too: Mark's sisters are DJ Samantha Ronson and designer Charlotte Ronson. 03 of 16 Emily Blunt and Stanley Tucci Gregg DeGuire/FilmMagic From costars to family! After working together on the 2006 film The Devil Wears Prada, Tucci was invited to Blunt's 2010 wedding to John Krasinski. It was there that he met Blunt's sister, Felicity, whom he married in 2012. 04 of 16 Stanley Tucci and John Krasinski That means ... Tucci and Krasinski are also in-laws! Tucci shared a sweet polaroid photo on Thanksgiving 2021 of him and Krasinski enjoying family holiday festivities. Tucci captioned the photo, "HAPPY THANKSGIVING FROM MY FAMILY TO YOURS." 05 of 16 Cameron Diaz and Nicole Richie Cameron Diaz, Nicole Richie. Donato Sardella/Getty Images The two women are sisters-in-law — though Cameron is tickled by the idea that few people realize it! The Charlies Angels star is married to Benji Madden, while Nicole is married to the musician's twin brother and Good Charlotte bandmate Joel Madden. Nicole and Joel were married in 2010, while Cameron and Benji tied the knot a few years later in 2015. 06 of 16 Josh Brolin and Barbra Streisand Streisand with (from left), husband James Brolin, Josh Brolin, Trevor Brolin, and her son Jason Gould. Kevin Mazur/WireImage The legendary singer is married to Brolin's dad, James, and is a doting grandma to Josh's four children. 07 of 16 Patrick Wilson and Scott Foley Bruce Glikas/FilmMagic Wilson and Foley have more than just acting in common: They're married to sisters Dagmara and Marika Domińcyzk, respectively. Wilson and Dagmara were college sweethearts who married in 2005. Foley and Marika told PeopleTV that they met after Dagmara "played matchmaker" while she and Foley were acting in the same play, and introduced them. The pair wed in 2007. The four shared the screen together in the 2014 film Let's Kill Ward's Wife. 08 of 16 Jenny McCarthy and Mark Wahlberg Jeff Schear/Getty McCarthy is married to Mark's brother, Donnie Wahlberg, though Mark missed his big brother's 2014 nuptials because it was his daughter's birthday. 09 of 16 Kirk Douglas and Catherine Zeta-Jones Tibrina Hobson/Getty Catherine-Zeta Jones' father-in-law was the late Kirk Douglas. She has been married to his son, Michael Douglas for more than 20 years. Following his death, Zeta-Jones also shared a touching tribute to her father-in-law. "To my darling Kirk, I shall love you for the rest of my life," she wrote on Instagram, sharing a black-and-white photo giving Kirk a kiss on the cheek. "I miss you already. Sleep tight…" 10 of 16 Liam Neeson, Vanessa Redgrave and Joely Richardson Nick Elgar/Getty Neeson married actress Vanessa Redgrave's elder daughter, Natasha Richardson, in 1994. The pair remained together until her tragic death in 2009. 11 of 16 Solange Knowles and Jay-Z Francis Specker/CBS via Getty When Beyoncé married Jay-Z in 2008, that made her little sister Solange his sister-in-law. The pair has had their ups and downs, but what family hasn't? 12 of 16 Julia Louis Dreyfus and Patrick Fischler Angela Weiss/Getty Fischler, who you'll recognize from shows like Mad Men and Once Upon a Time, married Julia Louis Dreyfus's half-sister, Lauren Bowles, in 2005. 13 of 16 Ashlee Simpson and Diana Ross David Crotty/Patrick McMullan via Getty Ashlee Simpson married into one iconic family! Her husband, musician Evan Ross, is the son of music legend Diana Ross and brother to actress Tracee Ellis Ross. We can only imagine what a blast Thanksgiving dinner is with these in-laws. (Of course Ashlee and Evan's marriage makes Simpson's big sister Jessica an in-law, too.) 14 of 16 Peter Sarsgaard and Jake Gyllenhaal Peter Sarsgaard, Jake Gyllenhaal and Maggie Gyllenhaal in 2014. Sarsgaard and Maggie married in 2009, but they had already been dating for four years before he appeared alongside Jake in 2005's Jarhead. In 2014, Jake told George Stroumboulopoulos that he and Sargaard fought on set: "He's my brother-in-law, by the way," Gyllenhaal told the host. "Yeah, we got in a fight. He was dating my sister at the time and we were making a movie together, which was really interesting." Sounds like brothers to us! 15 of 16 Blake Lively and Bart Johnson CHANCE YEH/Patrick McMullan via Getty If you didn't know that the Gossip Girl alumna was the sister-in-law of the High School Musical actor, you better get your head in the game! Johnson has been married to Lively's older sister, Robyn, since 1999 and the pair share three kids together. (Seal, to our knowledge, just happened to hop in for the photo.) 16 of 16 Alison Brie and James Franco Rich Polk/Getty When Alison Brie married Dave Franco in 2017, she got his older brother, James Franco, as an in-law. And being part of the creative fam comes with some perks: that same year, the couple starred in James' film The Disaster Artist together.