Zac Efron -- who was partying in a bar in Ibiza with Michelle Rodriguez -- is not only back on the bottle ... we're told he was never off it.
Zac has had big issues with substance abuse ... going to rehab twice last year for cocaine addiction. We're told he's also a big drinker.
People involved in Zac's life tell us ... his biggest problem is that he always believes he has the ability to stop. As one source says, "He'll stop cold for 3 or 4 days when he has to work and then he's back."
It's no secret Zac loves to party. We're told he's "climbing the walls" just before his various projects end ... waiting for the moment he doesn't have to show up for work in the morning so he can party hard.
Here's the good and the bad.
The good -- Zac's younger brother Dylan is a big influence on him. We're told Dylan has counseled him about the importance of sobriety and Zac doesn't blow him off.
The bad -- Zac is 26 but he's acting like an 18-year-old. The way it was put to us ... "When Zac was 18 and 19, when most kids go cazy, he was kept on a short leash [also known as Vanessa Hudgens]. When they broke up he went off the rails."
Pulls Yet Another
Fine Piece of Arce
47 minutes ago BY TMZ STAFF
Justin Bieber is on an absolute tear in Ibiza, and his latest conquest might be his best -- the Playboy Playmate he held a late night makeout session with on a yacht.
Biebs was photographed hooking up with Miss July 2013, Alyssa Arce on Thursday night. Our sources say she and Justin met on Wednesday ... and ended up hanging on the same yacht. Funny how that happens in Ibiza.
22-year-old Alyssa is signed with Wilhelmina LA, and we're told she hit it off with Justin almost immediately -- but it's nothing serious just yet.
As one source put it ... they're just "having fun."
Stars and Scars
You Be the Judge
57 minutes ago BY TMZ STAFF
Best fight EVER!!! It's like Ibiza: 90210. Did Justin Bieber win? Is Miranda Kerr worth fighting over? So we gotta ask ...
Chris Brown, Drake
First Live Duet Performance
8/2/2014 12:30 AM PDT BY TMZ STAFF
Chris Brown and Drake planned to unveil their new song Monday in Toronto, but the plan was scrapped because Chris can't get in to the country ... TMZ has learned.
We're told Drake invited Chris to join him Monday night on stage at his OVO Fest. We're told Chris agreed and the plan was for them to perform the song on which they collaborated last month.
The performance would have been big for 2 reasons -- it's the first time they performed together, and we're told there are veiled references to Rihanna in the song.
Now the snag. We're told Chris' people pulled the plug, because they realized Chris could never get passage into Canada. The country has close to a zero tolerance policy when it comes to letting criminals in ... and Chris has not only been convicted of a crime ... he's copped to a violent felony.
We're told his people broke the news to Chris ... any attempt to make the concert would be futile.
8/2/2014 12:25 AM PDT BY TMZ STAFF
Sherri Shepherd's Hubby
She Crapped on My Baby Shower
8/2/2014 12:20 AM PDT BY TMZ STAFF
Lamar Sally got a slew of baby gifts from just about everyone in his life except one person ... the woman who had signed on to be the mother -- Sherri Shepherd.
The baby was due Thursday. It's being carried by a surrogate and Lamar and Sherri were once looking forward to raising the kid together ... until he filed for separation and she filed for divorce. Now she wants a clean break from Lamar and the kid.
Lamar's friends have given him gift cards, baby clothes and lots of stuff for the nursery. Lamar has dropped $5K on a changing station, crib, baby swing and rocking chair. But Sherri has not so much as given him a diaper on which the kid can crap.
Sherri believes Lamar defrauded her into signing on with the surrogate, claiming he always planned on leaving her and this was just a transparent ploy to get child support.
When the baby is born, Lamar says he'll bestow the name he and Sherri picked -- Lamar Jr.
In other news...
The Kardashian-Jenner clan pretty much does everything together ... but there's one thing Kendall refuses to share.
Linda Hogan's Ex
I Got Hosed ...
On Her Boat
8/2/2014 12:15 AM PDT BY TMZ STAFF
Linda Hogan's ex-BF Charlie Hill claims she made him do a bunch of grunt work for free -- and we uncovered photos of him breaking a sweat aboard her yacht ... during their happier days.
TMZ broke the story ... Hill is suing Hogan for $1.5 mil, claiming she never gave him a dime for all the labor he put in during their 4-year relationship.
In these 2010 pics ... Charlie's relegated to hauling in a hose on her yacht -- aptly named Alimoney (bet Hulk Hogan must love that).
The Love Boat this ain't.
'Party Down South'
Lil Bit Quits!
It Ain't Safe Y'All
8/2/2014 12:05 AM PDT BY TMZ STAFF
"Party Down South" producers are scrambling to fill a giant hole ... TMZ has learned Lil Bit -- one of the show's biggest stars -- has quit, and it has nothing to do with money.
Sources close to Taylor "Lil Bit" Wright say she told producers she's quitting because she fears for her safety with all the craziness that goes on in the house.
We're told she also has strong religious beliefs and feels the show undermines her relationship with Jesus.
The rest of the cast has already signed contracts to return for season 3, and we're told producers are furious they have to replace LB now ... because it's like having to find a new Snooki at the height of "Jersey Shore's" popularity.
Lil Bit thinks producers are floating it out that she's holding out for a big payday, but we're told she wouldn't do the show again for a million dollars.
Post Workout #Selfies
8/2/2014 12:01 AM PDT BY TMZ STAFF
Mulls It Over
Today In Malibu
8/1/2014 5:19 PM PDT BY TMZ STAFF
Bruce Jenner's hair -- breathtaking.
Michael Strahan, Nicole Murphy
8/1/2014 4:58 PM PDT BY TMZ STAFF
Michael Strahan and Nicole Murphy have called off their engagement ... just one day before he's inducted into the Pro Football Hall of Fame.
Strahan's rep says it's all about 2,475 air miles -- he lives in NYC and she's in L.A. and it's just too difficult. It's especially hard because they're both real busy.
Murphy was married to Eddie Murphy ... and Strahan divorced Jean Muggli in 2006.
We shot the "Hollywood Exes" star last month after Strahan was threatened by a homeless guy with a knife -- and she seemed in the dark. Now we know why.
In other news...
Blow dryer be damned! JLo put the flatiron aside and showed off those Jenny from the Block curly locks!SEE MORE »
Parties Like a Wild Man
8/1/2014 4:00 PM PDT BY TMZ STAFF
Orlando Bloom is not acting like the loser of the Justin Bieber scuffle ... he looks like he's having the best time of his life at a restaurant near Ibiza.
Orlando looks a little -- well, buzzed -- as he dances furiously to "Happy" ... flailing his arms in the air.
At one point he pulls what appears to be his GF -- Erica Packer -- up on the bench he's dancing on and kisses her hand.
But Erica does not have a monopoly on Orlando. A bunch of chicks swarm him as he dances uncontrollably.
This is the funnest feud ever.