"I had my blonde hair!" Galitzine, 29, said in response. "You had frosted tips, and I was just like, is it like an aughts thing? ... I didn't understand your hair at all," Hathaway, 41, said.

The kind of frosting you see swooped on a plush layer cake at a bakery. The kind that, when topped on a cupcake, stands tall on its own like Dolly Parton's hair. Luckily, there's a super simple ...