The 'Real Housewives of Beverly Hills' star - who has two sons, Mason, nine, and Jake, five, with her ex-husband Eddie Cibrian, who is now married to the 'How Do I Live' singer - believes their relationship will drastically improve once LeAnn gets pregnant because it will help her to learn boundaries as a mother and step-mother.
The 40-year-old 'Drinking and Tweeting and Other Brandi Blunders' author told BuzzFeed.com: ''Hopefully, they'll have a child of their own and she'll understand better what a proper boundary is for a stepmother and a mother.''
The reality TV star insisted that she hopes to put her public feud with LeAnn, 30, behind her and only wants to communicate with her in private from now on.
She said: ''I really want to put this public war with LeAnn and Eddie behind me, and I want to communicate with them privately if they'll have me.
''Eddie and LeAnn have done numerous sit-down after sit-down after sit-down. For the past four years, tell-all interviews -- the crying, the 'we love each other,' the 20/20, the Katie Couric.
''I think we both need to step away from it now. After the book and everything. Put it behind us and move on.''
LeAnn recently revealed that she and Eddie hope to have children of their own.
She previously said: ''We've talked about having kids of our own. I've always admired working moms because they have it tough. I already have two children around half the time so we have our hands full but we talk about it often so we'll see what happens. We would love to, but it's all about the right timing.''