Hollywood star couple Brad Pitt and Angelina Jolie are reportedly planning to tie the knot at Windsor in a low-key ceremony. The pair, who have been together for seven years, got engaged in April. After the wedding ceremony, Pitt, 48, and Jolie will leave for south of France to celebrate at their luxurious Chateau Miraval estate, reported Daily Star online. "They have always planned to have the official part secretly with just their kids and family. They are looking at Windsor register office, where Charles and Camilla and Elton John and David Furnish tied the knot," a source said. Both Pitt and Jolie are currently shooting their new films, "The Counselor" and "Maleficent" respectively, here and think the venue would be ideal. "It just seems easier. They will keep it very low key. They have not finalised a date, but they are planning to slip out and get married with the minimum of fuss," the source added.