Robert - known for films like The Godfather Part II (1974) and Taxi Driver (1976) - revealed in the interview that he doesn't watch as many films as he "should".
The actor - who is currently promoting his new Netflix series Zero Day - spoke to radio host Scott Mills, 51, about his daughter Gia.
Then discussing the Wiggles and Ms Rachel, he said: "I didn't know of them until I started seeing them and my daughter loves to watch them."
Actor Robert De Niro spoke about parenthood in a new interview ahead of his daughter's second birthday.
He told the outlet that he's an "early riser" and said about his youngest daughter: "I spend my mornings watching Ms Rachel with her, and I give her her bottle."
