Sadie Sink has one dealbreaker when it comes to trends and booking roles. Sink, 23, opened up to Glamour about her iconic copper strands in a new interview published on Tuesday, November 25. "I've thought about it, but I've never dyed my hair," she said. "Anyone who has red hair knows the ups and downs of your relationship with it." Sink explained, "Sometimes you're like, 'Yes, I love my hair. It's the best thing ever.' And then sometimes you're like, 'Oh my God, I hate it. I just want to change it.