On 13 June 1987, at the Church of St Mary the Virgin in Chipping Norton, Tracy married Harry, the then Marquess of Worcester (born on 22 May 1952 and heir to the 11th Duke of Beaufort, making her the then Marchioness of Worcester).
They had three children, Robert, Marquess of Worcester (20 January 1989), Isabella Elsa (3 August 1992) and Alexander (3 September 1995).
The marriage was dissolved in 2018.