TMZ Live

Floyd Mayweather Jr.'s current GF better not get too comfortable ... because the boxing legend is banging at least SEVEN other women behind her back -- so claims Floyd's baby mama Josie Harris.

Harris called in to "TMZ Live" today to explain her beef with Floyd's on-again-off-again girlfriend Shantel Jackson, after Jackson allegedly ripped off her 10-year-old daughter's dress at the big fight in Vegas on Saturday ... but the beef wasn't the bombshell.

Harris is clearly pissed, but says Jackson has bigger things to worry about than some 10-year-old's dress ... namely Floyd's parade of women he's banging on the side. You gotta watch the clip!

All that said ... Harris still feels the designer who sold Jackson the same dress committed a "cardinal sin" in the fashion world. Listen below.

David Tutera's ex is pointing the finger at the "My Fair Wedding" host, claiming it's Tutera's fault they're splitting up their twins after a nasty breakup.

Ryan Jurica called in to "TMZ Live" this morning, claiming David made a unilateral decision to separate the children at birth when their 10-year relationship blew up.

Ryan and David had fraternal twins through a surrogate in July, and the births triggered a bitter custody battle. The complication stems from the fact that each man fertilized an egg from the same woman ... that was then implanted in the same surrogate, who gave birth to the two babies at the same time ... meaning Ryan is the biological dad of one child, and David of the other.

Despite David's decision, Ryan tells us he'd rather keep the kids together. He insists splitting the kids up is just a temporary measure until a final custody arrangement has been reached ... but that could take a while.

Steve Aoki insists he wasn't BS'ing when he posted a photo of himself floating magically above his private jet on Friday ... and he just called in to TMZ Live to prove it.

We saw the photo this morning on Instagram and immediately thought it had to be Photoshopped ... but Aoki said no way, explaining he does similar "Aoki jumps" all around the world.

According to Aoki, it was the pilot's last flight of the day, so the guy didn't mind having a little fun with the plane. We still weren't convinced, so Aoki just posted video proof on Twitter.

Oh yeah, and remember the insane cake toss that creamed the kid in a wheelchair last month? Steve says he INTENDED to hit the guy. You gotta hear all about it.

Charlie Sheen ... GOES TO COLLEGE??

Now, that the Warlock has finally obtained his diploma from Santa Monica High School (30 years behind schedule) ... Charlie tells TMZ college would be "HELLA FUN."

The 48-year-old graduate just called "TMZ Live" to talk about his accomplishment -- and explained how he managed to finally complete HS, even though he only showed up for class 33% of the time.

Charlie also explains why he was so passionate about getting his diploma -- and what he plans to do next.

Check out the clip.

Simon Cowell might be over the shock of becoming a father, at 53, but his reaction to possibly getting married on top of that is down right hysterical -- as in ... "HAHAHAHAHAHAHA!!!"

Simon called in to "TMZ Live" to discuss a possible marriage to baby mama Lauren Silverman -- and his feelings about creating his own little Mini-Me.

Simon boasted ... "If it's a boy, then there will be another me on this earth for many, many more years to come."

As for his reaction to the news he'd knocked up Lauren ... "Gulp!"

But you gotta see Simon's response to the marriage question. Classic ... bachelor.

Lamar Odom's drug-induced paranoia, crack binging, and Khloe Kardashian's jealous rage -- the NBA star's ex "roommate" told the FULL STORY about her summer with Lamar ... and it's wild.

Polina Polonsky was on TMZ Live -- we posted an excerpt where she described Lamar completely unraveling in her L.A. apartment this summer ... smoking crack and becoming paranoid.

Now here's the full monty ... Polina talks about how Lamar practically began behaving like a toddler while living with her -- and how Khloe eventually barged in to her apartment in the middle of the night like an "uncaged animal."