Showbiz Top 5: Lamar Odom cuts off his dad for criticizing Kardashians

After being MIA since reports of a drug problem, Zac Efron now has a message for his fans…The Amanda Bynes rehab report….Which Real Housewives of O.C. got snubbed by Bravo? Kellie Rasberry has the scoop in today’s Showbiz Top 5.

The eighth season of “The Real Housewives of Orange County” ended about a month ago and Bravo is gearing up for season nine. But sources told “E! News” that Gretchen Rossi and Alexis Bellino have not been asked to return.  Gretchen joined the show in season four and Alexis came on board in season five. But Bravo is now interviewing new women to take their spots. Also, over on “The Real Housewives of Beverly Hills,” Taylor Armstrong is not coming back as a full-time cast member. She’ll just pop up now and then. .

 TMZ is reporting that Amanda Bynes left the UCLA Medical Center about 3 weeks ago. She reportedly checked into The Canyon, a rehab center in Malibu that caters to celebrities. Their sources tell them that Amanda is still in bad shape. She rarely leaves her living quarters and doesn’t interact with others very much. She’s also extremely paranoid that paparazzi will find her.

  Zac Efron has been MIA since reports came out that he went to rehab twice this year to deal with an alleged cocaine addiction. But on Friday, he finally let his fans know he’s doing okay. Zac posted a photo of himself at the Machu Picchu mountain ruins in Peru with this caption:  “Hey guys! Just returned from an incredible trip to Peru with my dad and wanted to thank you all for your support these past few weeks…means the world to me. Love you guys! – Z.”

“The Hollywood Reporter” says Jennifer Lawrence took one day out of her busy schedule to film a cameo in the upcoming “Dumb and Dumber To.” She’ll play the younger version of Kathleen Turner’s character, Fraida Fletcher, who’s mentioned in the first movie. Also coming back for the sequel is Billy the Blind Kid. The Farrelly Brothers wrote a short part for that character in the new script, but they couldn’t find the guy who played him — Brady Bluhm. Thanks to Facebook, they found him! But they still made him audition for the part. Brady nailed it.

Lamar Odom wasn’t required to show up in court on Friday, where he was facing a DUI charge. Instead, his attorney asked the judge for a continuance, which was granted. The new hearing will be on October 10. Meantime, Lamar’s dad Joe told TMZ that his son called him up and chewed him out for speaking out against the Kardashians. Lamar’s been paying his dad’s $2900 a month rent for the past four years, but he told his dad that he’s cutting him off. Joe says he’ll be out on the streets at the end of next month.