The 43-year-old actress separated from Pitt in 2005 after almost five years of marriage, but Aniston remained close to her former mother-in-law and wants her to be present when she ties the knot again, reported Sun online.
"Jennifer wants Jane to be there. She's closer to her than she is to her own mother Nancy and it just feels right.
"Jane is thrilled that Jennifer has found happiness again. She has been on the end of the phone and in person offering advice and support for the past seven years. She wouldn't miss Jen's wedding for anything," a source said.
Just months after Aniston filed for divorce, Pitt began a relationship with his "Mr & Mrs Smith" co-star Angelina Jolie - who he has been with for seven years and is now engaged to.
Aniston has found love once again though with her 'Wanderlust' co-star Theroux, who she began dating in May 2011 and got engaged to in August after the actor proposed at his 40th birthday party.
Although Aniston and Pitt, 48, are on good terms, despite their divorce, he will not be receiving a wedding invite as it would be too distracting for the couple and their guests.
Last week, it was revealed that Aniston wants to tie the knot at Julia Roberts' ranch in New Mexico.
