Casey Anthony is about to change titles from "America's most hated mother" to aunt, because Breaking Celebrity News has exclusively learned her brother Lee Anthony and his wife are expecting their first child together.

"Want to share with the world that my amazing daughter and her hubby are gracing this family with a boy!!" Lee's mother-in-law, Dianne Mazorek posted on her Facebook page on Tuesday.

"I AM SO HAPPY!!!! Thank you and I love you both!!"