But TV audiences did not witness an exchange of vows until 21 years later, when Prince Charles married Lady Diana Spencer.

BBC: Royal weddings: A brief history

The brand got its first celebrity exposure in 1981, when Princess Diana--then the shy, unstylish Lady Diana Spencer--wore green Hunter boots in her pre-makeover engagement photos.

FORBES: A Brand Re-Booted

Born Diana Spencer, at Park House near Sandringham, Norfolk, in July 1961, she became Lady Diana Spencer after her father inherited the title of Earl Spencer in 1975.

BBC: Princess Diana: Althorp House exhibition to close

Prince William has announced his engagement to Kate Middleton, setting the stage for a royal wedding expected to be the biggest event of its kind since the wedding of Prince Charles to Lady Diana Spencer nearly 30 years ago.

BBC: Royal wedding 'should be low key'