Soon after the end of her engagement, Cartwright began a relationship with tennis player and fellow Australian Lleyton Hewitt, On 5 May 2005, the couple announced they were expecting their first child. The pair married on 21 July 2005; the wedding was at the Sydney Opera House, and their reception took place at Taronga Zoo. The event attracted much media attention, with Bec and Lleyton selling exclusive coverage of the day to magazine "New Idea". Fellow actresses and friends Ada Nicodemou and Kate Ritchie were bridesmaids. Commemorative stubby holders were given as gifts to all guests.