Natalie Portman is Jealous of Mila Kunis?

OK, this one comes from The Enquirer, so it has to be taken with a grain of salt, but when you think about it, it actually kinda makes sense and might go a long way to explain why Natalie Portman has been rockin' the "Die, b!tch!" eyes so much lately.

Apparently, Natalie is jealous of all the attention being paid to her Black Swan co-star, Mila Kunis, or at least that's what people are saying, because any time two young attractive women work together, someone starts a rumor that they want to murder each other. "This was supposed to be Natalie's BIG role," says the Enquirer's "insider." "Natalie's confident about her performance, but she clearly didn't expect Mila to be getting so much Oscar talk."

It seems unlikely to me that Natalie Portman, a hot, wildly successful Harvard graduate, is at all threatened by a young up-and-comer who's been in, like, three movies. Then again, this is the ultra competitive world of Hollywood actresses, and Natalie is pushing 30, which is like being 75 in the real world. Anyway, it's a ridiculous theory but it might help to explain what has been dubbed "The Plague of Portman B!tch Faces." Check out Natalie mean muggin' below, and tell me that's not the face of a chick who wants to have someone killed.