A generation was glued to the television when Lady Diana Spencer walked down the aisle of St. Paul's Cathedral in London to marry Prince Charles in 1981.

But as the TV ratings come in for the Friday nuptials of their firstborn son, Prince William, there's no question about his enormous popularity in America.

Live coverage on 11 networks (starting 6 a.m. EST, and lasting more than an hour) of William and Kate's wedding at Westminster Abbey drew more than 18.5 million U.S. households, according to Nielson Media Research (via EW.com). Meanwhile, Charles and Diana's wedding drew an estimated household viewership of 14.2 million.