Actress Charlize Theron has said her four-year-old son, Jackson, developed a crush on her The Huntsman: Winter’s War co-star Emily Blunt, while spending time on set during filming. The two stars play rival sisters in the film, which serves as a a prequel to Snow White and the Huntsman.

Charlize TheronCharlize Theron’s son had a crush on Emily Blunt during the The Huntsman: Winter’s War filming.

“My son is in love with her,” Theron told Extra TV. "He thinks she’s, like, the most beautiful princess ever. Yeah, it’s crazy. I didn’t even exist, he was just like, ‘Ahhh, she’s a princess.’ I’m like, ‘I’m a queen.’”

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Jackson also enjoyed watching his mom on set, especially during her more villainous moments. “He was watching her close-up and she was really going for it, like, and the intensity, and it was just one of those heightened scenes,” Blunt said.

“Jackson was watching her close up and he went, ‘Oooh, Mama's spicy,’” the actress added. “I have no idea where he even came up with that word choice,” Theron said while laughing. Blunt also is a mom, to two—year-old daughter Hazel and her second child is on the way.

Speaking to Entertainment Tonight, Blunt revealed that Hazel isn't really ready to be a big sister yet. "She's a bit dismissive of the idea at the moment. She’s quite liking being top dog,” Blunt said.

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However, as Blunt put it, Hazel has "has no choice" about becoming a big sister, but her mom does have a strategy that might make her adjust to the change a little easier. "My plan is just to tell her that this is less about having a sibling and more that she's being promoted," Blunt joked. "She gets to have a worker now that she can boss around."

Watch the trailer for The Huntsman: Winter’s War below: