Brandi Glanville has been all over the place promoting her new book this week ... and trash talking LeAnn Rimes along the way.

In a sit down with Australia's "Kyle and Jackie O" show, she opened up about Rimes' constant tweeting about being a second mother to Brandi's kids with Eddie Cibrian.

"It's just passive aggressive," Brandi says. "Instead of coming out and being like, 'I don't like Brandi, she's crazy,' she uses them as tools."

"I actually don't follow her [on Twitter]," Glanville also revealed. "I stopped following her a long time ago because it got very unhealthy."

Check out the video above to see what else she said about Rimes' Twitter ... and her plastic surgery down there.

That wasn't Brandi's only diss for her ex-husband's new bride though. 

Glanville also appeared on "The Tonight Show" last night, where she played a scripted segment called "Battle of the Celebrity All-Stars."

When asked "Who is known as 'The Little Tramp?', the "Real Housewives of Beverly Hills" star answered with the only answer we'd expect. 

Check out the clip below.

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