Leann Rimes and Brandi Glanville get into another Twitter feud.

Brandi Glanville is preparing to launch her new book on Feb. 12 but a U.S. tabloid is giving fans a preview after releasing excerpts of the explosive tell-all.

The "Real Housewives of Beverly Hills" star has not been shy about discussing her failed marriage to actor Eddie Cibrian and now readers will finally get the chance to understand what exactly went wrong in the book entitled "Drinking and Tweeting: And Other Brandi Blunders." Cibrian infamously cheated on Glanville with troubled singer LeAnn Rimes.

"LeAnn had 'accidentally' smeared some cake frosting on her top (she was still a bigger girl and completely flat-chested at the time) and asked my husband, not realizing that I was standing behind the both of them, if he wanted lick it off her," Glanville writes in the excerpt released by Life & Style magazine.

"This woman asked my husband if he wanted to eat the frosting mess she'd dropped on her nonexistent chest? … He hadn't realized I was there, either, and he laughed with hungry eyes at the suggestion," she went on.

Rimes, 30, was also married at the time of the affair to dancer-turned-chef Dean Sheremet. The singer met Cibrian, who shares two children with Glanville, on the set of the 2009 film "Northern Lights" which is allegedly when their inappropriate relationship began.

"I'm not entirely sure how I ended up on the floor of my closet sobbing," Glanville writes. "A teary-eyed Eddie found me lying there minutes later,...he started kissing me all over…He swore up and down my body that it wasn't true…that it was completely innocent."

Reports of an affair between Rimes and Cibrian began swirling after the pair, now married, was spotted on what appeared to be a secret date. At the time the actor denied the affair and Glanville, 40, explained why she accepted his denial even with damning evidence.

"In that moment, it was easier to believe him, because I just couldn't stand the thought of being without him," she stated.