See Prince William & Prince Harry as Babies
10/03/2011 AT 10:30 AM EDT
Long before he met and married his princess, Prince William was just another little boy living in London.
He played peek-a-boo with his father, Prince Charles. He banged on a piano with his brother, Prince Harry. And, with childlike wonder and adoration, he put makeup on his mother, the late Princess Diana.
In newly released footage (obtained by NBC) of William and Harry at ages 3 and 1, respectively, the princes, now 29 and 27, spend quality time with their parents.
"He's very enthusiastic about things, pushes himself right into it," Diana, 24 at the time, says of William in the video, which was filmed for British television 26 years ago. [He's] very polite."
Diana also discusses her own royal wedding. "Enjoy something like that?" she jokingly questions when asked about her big day.
"It's terrifying," she says. "Such a long walk up that aisle, for start."