The Playboy founder, 86, and Playboy model, 26, picked up their marriage license from the Beverly Hills courthouse on Tuesday, Dec. 4, Us Weekly confirms.
Hefner and Harris became engaged in December 2010, but the model called off the wedding in June 2011 just days before the ceremony.
Though their split turned ugly when Harris spoke out about their sex life, the couple reunited in June 2012. "Yes, Hugh Hefner and I are back together," Harris tweeted after reconciling. "Yes I am his #1 girl again. Yes we are happy. Hope that clears up any confusion! XO."
On Saturday, Dec. 1, TMZ reported that Hefner and Harris were once again engaged. According to TMZ, the couple plans to tie the knot at the Playboy Mansion on New Year's Eve.