What is hey now hey now this is what dreams are made of?

"Hey now, hey now, this is what dreams are made of" is a popular line from the song "What Dreams Are Made Of" by Hilary Duff, which was featured in the 2003 Disney movie "The Lizzie McGuire Movie." The song is an upbeat, inspirational pop track that encourages listeners to chase their dreams and believe in themselves. It has since become an iconic anthem for fans of the movie and Hilary Duff's music. The line "hey now, hey now, this is what dreams are made of" has been widely used in pop culture references and memes.