The 43-year-old, who is currently dating actor Justin Theroux, is said to be delighted after hearing the news that her ex-husband has got engaged to Jolie, and that the duo is planning to finally tie the knot.
"Jennifer is happy for Brad and Angelina. She is so in love with Justin that she is really grateful how things turned out," contactmusic.com quoted a source as saying.
"If it weren't for Angelina, Jennifer would not have connected with Justin. I wouldn't be surprised if she even went to the wedding," the source added.
Brad Pitt and Angelina Jolie will reportedly marry later this year.