Margaret's wedding was the first royal ceremony to be broadcast on TV and attracted 300 international viewers. Her niece, Princess Anne, served as one of her eight bridesmaids. Margaret and Antony would go on to have two children, Lady Sarah Armstrong-Jones (now Chatto) and David Armstrong-Jones, the 2nd Earl of Snowdon. After 18 years, Margaret and Antony's volatile marriage ended in divorce in 1978.