Faith Evans' memoir, Keep The Faith, hits shelevs on August 29th. In the book, the singer talks about her marriage to Notorious B.I.G. and her tenure at Bad Boy Records. She also speaks on her encounters with late rapper Tupac Shakur.

Excerpt From Faith Evans' Book About Catching Lil Kim In Bed With Biggie:

I don't know what got into my head. But I decided that I needed to know once and for all what Big was really trying to do. On that night before Christmas, I drove to Big's house on a mission to find out where I really stood.

The security guard at the gate just waved me in when I pulled up. It was Christmas Eve and she'd seen me come into the complex with the kids, so I guess she didn't think anything of it.

I parked in the rear of Big's town house and walked up to the garage. It was locked. I hadn't been over to Big's house a whole lot but I did know that you could jiggle the garage door a certain way and unlock it.

I got into the garage, where there was an elevator that would take me to both floors of Big's duplex. There I was, rocking a black skully cap and a heavy goose-down jac ket, tiptoeing into the elevator and pressing the button to go up to the second floor, where his bedroom was located.

I can't believe how bold I was. I knew all his boys were probably there. And anyone in there could have shot me on sight, thinking I was an intruder. I moved slowly, tiptoeing through the house silently.

I got to Big's bedroom door, turned the knob, and went inside. As soon as I saw a small lump next to Big's large frame, I flew into a rage, ran over to the side of the bed, and pulled back the covers. I grabbed some chick out of the bed and started beating her a--. At some point, the chick's wig came off in my hand: It was a short, cropped wig. I stopped throwing punches for a minute to get a good look at the chick I was beating up. It was Lil' Kim. She was completely butt-naked, yelling as I pushed her around the room.

"So you're not f---ing her, right?" I screamed at Big. "Yeah, you not messing with her anymore right?"

When they heard the commotion, Cease, D-Roc, and Gutter came running into the room.

"Oh s---!" they yelled in unison. "It's Faye! How the hell she get in here?"

Big sat up in bed and pointed at Kim, who was standing in a corner of the room, trying to cover her naked body with her hands and while I was still yelling at Big.

"Yo, get her outta here," Big said. They led Kim out of the room and she screamed and cursed the whole way.

Read Excerpts Of Faith Talking About Her Encounters With Tupac Shakur HERE.