Celebrity Rehab

Amanda Bynes' post-rehab future looks very bright ... pink -- the color of choice at her prestigious fashion design school

Amanda -- carrying an oversized bag of school supplies -- appeared in the colorful lobby of the Fashion Institute of Design and Merchandising in Irvine, CA ... looking like a typical college student.

Bynes -- who lives at home with her parents -- enrolled in design classes as part of her recovery ... after she was released from rehab in December.

Stone Cold Steve Austin just threatened to open a can of WHOOP-ASS all over Justin Bieber ... warning the pop star that if he doesn't straighten up, he's gonna catch a Size 13 in his ass.

The former WWE champ was on "The Arsenio Hall Show" last night when he issued the ultimatum -- shape up ... or else.

Stone Cold says he loves kids ... and just wants to make sure Justin gets on the right path before it's too late -- but he thinks an ass-kickin' is the only thing that'll get through to the Biebs.

Senator Marco Rubio has got big fish to fry ... nonetheless, he's kinda worried about Justin Bieber.

Rubio stopped in the Dirksen Senate Office Bldg in Washington D.C. to chew the fat with us ... and the father of 4 has a clear view that the Biebs is in trouble and needs help.

Trace Adkins beat a hasty retreat from rehab -- just 14 days after he entered the Florida facility for alcoholism ... TMZ has learned.

Sources connected to Trace tell TMZ ... the country star's father is seriously ill and he felt he needed to be at his bedside ... immediately.

We're told when the illness resolves itself ... Trace will then decide if he goes back to an inpatient program or does outpatient therapy.

As for his immediate sobriety, we're told Trace asked his therapists in Florida to put him in contact with counselors near his dad.

Usher and Scooter Braun had nothing to say as they arrived back on U.S. soil after spending time with Justin Bieber.

Several photogs peppered both -- especially Usher -- with questions about what is loosely being described as an "intervention."

Not a word from either.

Amanda Bynes' road to recovery includes one big cosmetic change ... removing an angelic tattoo from her body.

Amanda's been working out a ton lately -- hitting the gym and doing some power walking -- and she's also slowly erasing a pair of angel wings from her right forearm.

The tattoo -- which was prominent during her blue wig days -- is faded in recent shots of Amanda walking around her parents' neighborhood in Thousand Oaks, CA ... where she's been living since getting out of a rehab facility last month.

Usher helped make Justin Bieber a superstar, but it's gonna be way harder to get his former protege back on the straight and narrow -- since Justin's yet to suffer any consequences for his actions.

Unless, of course ... chilling on a tropical beach with a hot chick is a consequence.

Dean McDermott's been hitting the bottle in rehab ... but this beverage won't derail his treatment because it looks like it's all part of his plan to get healthy.

Dean left his rehab facility over the weekend for an outing -- with other patients -- and carried his own refreshment ... a healthy bottle of Kefir -- a vitamin-rich fermented milk drink.

McDermott checked himself into a treatment program in L.A. last week for "health and personal reasons" ... and apologized for "the pain" he caused his family -- an apparent reference to reports he cheated on Tori Spelling.

Rehabbing country singer Trace Adkins is back under the influence ... of music -- TMZ has learned, he just bought a sweet new guitar in Florida to write music as part of his treatment.

As we reported, Trace fell off the wagon earlier this month on a country music cruise after 12 years of sobriety -- drunkenly confronting a Trace Adkins impersonator ... and quickly got himself into a treatment facility.

Sources tell us, Trace is currently enrolled in a Florida rehab center ... and his therapist encouraged him to keep writing songs in order to stay focused on positive things.

We're told Trace thought it was a great idea ... and on Saturday, he was escorted by rehab employees to a music store in Lake Worth, FL ... to purchase a used Martin guitar for $1,100.

Rehab never sounded so good.

Justin Bieber is suffering from the same delusion that Michael Jackson once embraced -- putting on a false air of confidence when behind the scenes their lives are falling apart.

You'll recall the scene with MJ back in 2004 ... after his arraignment on child molestation charges. Michael famously jumped on his SUV and waived and smiled, trying to convince everyone things were ok.

Justin did the same thing Thursday as he left jail ... after being busted for DUI and resisting arrest.

As much as both of them protested ... Michael and Justin had the same Achilles' heel -- drugs. Michael was hooked on a pharmacy of prescription drugs, and Justin has an enormous problem with sizzurp.

Justin Bieber's people are asking the singer to come back to L.A. so they can sit with him and convince him to go into therapy ... IMMEDIATELY.

Sources connected with Bieber tell us ... they have been trying to get him into rehab for months, but he has scoffed at the idea -- he won't have a conversation about it and insists he doesn't need it.

So we're told his people believe the next best step is psychotherapy ... to deal with both his drug problem and the underlying issues that have caused it. We're told Justin has not rejected the notion of therapy and is willing to have the discussion when he returns to L.A.

Justin's team have played armchair shrink over the last year, and they believe the root problems involve his upbringing as well as the obvious -- being a child star who grew up rich and famous and got a little too used to it.

Dean McDermott now admits he has some big personal problems ... so he's checked himself into rehab.

A remorseful McDermott seems to be addressing reports that he cheated on Tori Spelling, saying, "I am truly sorry for the mistakes I have made and for the pain I've caused my family."

Dean kind of mysteriously adds, he's dealing with "some health and personal issues."

A radio station in Canada is trying to do what Scooter Braun can't ... get Justin Bieber into rehab ... but the station has a secret weapon.

Hot 89.9 in Ottawa just radioed out to its listeners -- Justin is persona non grata on its airwaves UNTIL he checks himself into a facility to get badly needed help for drug abuse.

So far Justin has laughed off all attempts to get him into treatment.

Sounds good in theory ... but seriously, the guy hasn't had a hit in a while so who's gonna really notice?

Ke$ha's gonna have to find a new art project in rehab ... one that doesn't involve asking her fans to send in their teeth ... because her treatment center tells TMZ they have a strict no-tooth policy.

While Ke$ha is still being treated for an eating disorder, the singer recently had a friend post a message on Twitter asking her fans to send in their chompers so she could "make art" to pass the time.

As weird as it sounds, K's been dabbling in tooth art for a while ... using real teeth in bras, bandanas and various pieces of jewelry.

But a rep for the rehab center tells TMZ ... there will be no canine crafting during her stint in treatment because "We can't accept human remains."

The rep explains, "There is always a risk that it could be of bio-hazardous material so we are not able to bring in anything that's real."

However, the center WILL accept fake teeth ... if her fans wanna round up a bunch of falsies.

So, chew on that.

Justin Bieber is laughing at everyone who is worried about his drug abuse ... because he thinks what he's doing is simply the mark of a 19-year-old ... and besides, it's fun.

People close to Justin tell us ... he's laughing at the stories TMZ has posted about his drug use ... in particular, what has become an out-of-control sizzurp problem. Justin's feeling is that he's young with lots of time on his hands -- as he puts it, "I'm on break." There are no concerts or other obligations on his immediate schedule.

As we reported ... Justin's people have been urging him to get help for what has become a bad drug problem, but he has shut them down.

In fact ... over the weekend, Bieber posted a video on Instagram on an ice rink with the hashtag "worried bout nothing"

Check out the video.

Dennis Rodman's alcohol-fueled meltdown was caused by North Korea ... so claim the people who got the former Hall of Famer into rehab.

Sources connected with Rodman -- the ones who convinced him he needed to check into rehab after his controversial trip -- tell TMZ, from the minute Rodman landed in North Korea he was plied with alcohol.

Rodman claims his bizarre -- arguably unpatriotic comments -- were the result of alcohol abuse and he says the pressure he felt before doing his disastrous interview is why he landed in rehab.

But people close to him say ... the mucky-mucks in the North Korean government were more than happy to supply Rodman with endless amounts of alcohol ... to the point his mind was poisoned.