Many football fans dream to one day own an NFL team. But for actresses Kate and Rooney Mara, their lineage traces back to the owners of two of the most famous NFL franchises – the New York Giants and Pittsburgh Steelers. Actresses Rooney and Kate Mara have football run through their veinsGettyIt just so happens that the sisters are the great-grandaughters on their paternal side of Giants founder Tim Mara, whilst on their maternal side, their great-grandfather is Art Rooney Sr. At the time, it cost both men just $500 to start their teams. Now the Steelers and Giants are worth $8.7 billion and $12 billion, respectively. Of course, youngest sister Rooney uses her middle name – which pays homage to her lineage – as her stage name. The Steelers are also one of the most successful teams in NFL history having won seven Super Bowl titles, whilst the Giants have tacked on an additional four after the AFL-NFL merger in 1970. With football literally running through her veins, Kate was asked during an appearance on Jimmy Kimmel Live! back in 2014 which team she sides with. “If I’m mad at my mom, I root for the Giants, and if I’m pi**ed at my dad (Tim Mara, Giants vice president), I root for the Steelers,” she joked.But years later, she also revealed to Rich Eisen that she leans more towards the G-Men. “My dad has worked for the Giants my entire life,” she stated. “I grew up at Giants Stadium and I’m a New Yorker, so I do feel closer to the Giants. That’s what I grew up with. …“I still love the Steelers, and if they played each other [in a Super Bowl], it would be great.”Mara (L) sang the national anthem the week her grandfather passed away in 2005GettyMara has worked with former Giants players, including Victor CruzGettyMara has sung the national anthem at both teams’ games, doing so at Met Life Stadium back in 2005 the week that her grandfather, Wellington Mara, passed away, with her family standing behind her. Does Kate Mara have a ‘Super Bowl’ clause written into her contracts?The House of Cards star was unable to attend Super Bowl XL when the Steelers defeated the Seattle Seahawks in 2006 due to work commitments. Rumors then began circulating years ago that that she had made it a thing to include a unique Super Bowl clause in any future acting contracts that would allow her to attend if the Giants or Steelers were involved the Big Game. However, Mara revealed in 2026 that this was just not true. “I mean, I did one year when I was filming 24; the Pittsburgh Steelers were in the Super Bowl and I was filming the day after the Super Bowl,” Mara joked in a March interview with Virgin Radio UK’s Chris Evans. “At the time I didn’t have a lot of clout, so I wasn’t able to convince them to let me off that morning. I wasn’t going to be able to make it back in time to film, and so I had to miss the Super Bowl. Kate Mara (L) would lean more towards the Giants as her father, Timothy, still works for the teamGetty“So then I said, ‘Ok, well, any time moving forward if it’s near the Super Bowl, we have to make sure that if either the New York Giants or the Steelers are in, that I’ll be able to go to the Super Bowl.’“And then someone thought that that was, ‘Oh well, now she has it in every contract.’”Despite the Steelers and Giants combining for six Super Bowl appearances from 2001-2012, the two sides have never met each other in the biggest game on turf. With John Harbaugh‘s Giants currently 3-1, and Mike McCarthy and Aaron Rodgers at the helm of the Steelers who sit at 2-2 in the early weeks of the regular season, could 2026 be the year that Kate and her family be placed in a win-win situation?Unlikely, but not impossible.