Brad Pitt and Angelina Jolie set to tie the knot

Lawyers in the US believe Brad Pitt and Angelina Jolie are about to get married.It comes after Brad legally adopted Angelina's adopted children Maddox and Zahara, reports the Mirror.Legal experts say Brad would have had to offer US courts assurances that he was planning to make an honest woman of Angie.Evan Schaeffer, a partner at famed American law firm Schaeffer & Lamere, said: "Under American law, adoption is a profound and significant act. It normally doesn't take place unless there's already been a marriage."Thus it's reasonable to infer that a marriage is around the corner for Brad and Angelina."And LA-based lawyer J Craig Williams said: "It would take upcoming nuptials or an agreement to become partners for the court to approve such an adoption."Brad officially adopted four-year-old Maddox and eight-month-old Zahara on December 2, legally changing their surnames to Jolie-Pitt.