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And so does her mother!

The Mean Girls star proclaimed her affection for Big Macs at the Matthew Williamson NYC store opening on Sunday, and now Dina Lohan is telling Access Hollywood: "I'm a mom. If I see my daughter a little thin, I say, 'Eat more McDonald's.'"

Uh, done and done!

Are the Lohans looking for an endorsement deal or is Dina just trying to prove that her daughter followed her advice? And we've questioned it before, but we'll question it again... is Linds too thin?

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