On Wednesday, Aug. 11, Montag appeared on the "Call Her Daddy" podcast. During the chat, Montag explained why she doesn't think her former "The Hills" co-star made as many right moves as Conrad's "Laguna Beach" frenemy Kristin Cavallari did.
After podcast host Alexandra Cooper praised Conrad for no longer "scrambling" for fame, Montag replied, "I feel like Kristin, let's be honest, is the most successful. I feel like Lauren didn't make it like she should have. She should be Kylie [Jenner]. She was so good at makeup, she should have done the tutorials. If she had a good team, she'd be a billionaire. She'd be a hundred-millionaire."
Montag continued, "She is not where she should have been at all. She has a Kohl's line -- great, whatever. But she should be a hundred-millionaire -- are you kidding me? Who gets that big promotion, that big fame, that big engine behind her, the loved one, the this-and-that. The narrator -- no one even gets the narrator show. Kylie didn't get a narrator show. She should be so rich."
The 34-year-old "Celebrity Big Brother" alum went on to say that she'll "always love" Conrad and appreciate her for providing her start in showbiz, but that she resented how Conrad acted toward now-husband Spencer Pratt.
"When that whole Spencer thing happened, she's like, 'If you date Spencer, you're off the show,'" Montag recalled. "How dare you, and I'm not your dog. Yeah, I appreciate you getting me on this show, but that doesn't mean you own me and you can tell me what to do in my life. I just don't appreciate that."
The star added, "I do have such a love for Lauren, and it didn't have to go that way. She chose and wanted it to go that way, and then kept following up with that, and then kept blaming things on me and blaming her sex tape on me."