Talk about taking sides! Julianne Moore revealed on Watch What Happens Live on Sunday, Oct. 4, which one of her super-famous former costars she would rather give her kidney to: Robert Pattinson or Kristen Stewart.
The Freeheld actress, 54, was put on the spot by host Andy Cohen, who joked that he was going to "pit some of her former costars against each other" as part of a "hypothetical situation."
Cohen then asked Moore: "Who would you give your second kidney to if they needed it?" listing the possible recipients as Stewart, 25, and Pattinson, 29, who famously dated for three years until the fiery demise of their relationship in 2013.
Moore, meanwhile, has previously starred with both Twilight actors on separate films, including Moore's Oscar-wining turn in 2014's Still Alice with Stewart, and Maps to the Stars with Pattinson from the same year. (In fact, she had sex with the British actor in the David Cronenberg flick!)
"I'm gonna go with Kristen," Moore replied on Sunday with a laugh. Moore has previously gushed about the actress on multiple occasions. This past January, Moore revealed that she was so excited to work with Stewart on Still Alice, a decade after the former child star acted in her husband Bart Freundlich's movie, Catch That Kid.
"I knew her, she was in a movie with my husband when she was 12, 12-and-a-half years old,” said Moore. "And Bart would come home from work and say, 'This girl is amazing, she’s a star, she’s such a great actor, I can’t believe it.'"
Another surprising revelation made by Moore during the episode? Her most challenging love scene ever — and there have been many. "They're always a little awkward, you know? Uh…." Moore said, taking a moment to reflect. "One of the weird things about Boogie Nights was that there were all of these other actors, too."
Moore portrayed a leading porn star named Amber Waves in the 1997 movie, which also starred Mark Wahlberg and Heather Graham.
Sign up now for the Us Weekly newsletter to get breaking celebrity news, hot pics and more delivered straight to your inbox!