Is Nicole Back in Rehab for Diet and Drugs?  —  Reports are swirling that tabloid princess Nicole Richie is back — yet again — in rehab and more "helpless" than ever, but TMZ is told that it just ain't so.  In fact, as we write, Nicole's sitting at home in Glendale, and doing just fine.

MIAMI HIDEOUS  —  WHO knew Miami was such a tough crowd?  When Britney Spears did an impromptu lip-sync/dance performance at Mansion on Saturday night, the reception was less than enthusiastic.  The crowd, full of "trannies and gay guys," according to our spy, sneered...

Is another kitten in the plans for TomKat?  —  Plus: Lindsay Lohan is a hotel owner's worst nightmare  —  Are more babies in store for Katie Holmes and Tom Cruise?  —  Is TomKat looking to have another kitten?  —  Tom Cruise and Katie Holmes are moving into a Beverly Hills estate …

Lindsay's vodk-AA sponsor  —  Alcoholics Anonymous member Lindsay Lohan has lined up Svedka vodka to sponsor her 21st birthday blowout in Las Vegas, a rep for the brand confirmed to us yesterday.  —  It's part of a deal that could net the star up to seven figures for the July 2-3 celebration.

Sharon Stone Bikini Pictures  —  So, it's pretty to give Sharon Stone a hard time, what with her generally being crazy, but after seeing these Sharon Stone bikini pictures, I think we should cut her a little slack.  Granted, looking good in a bikini doesn't really have much to do with overall mental health …

Former Creed singer Scott Stapp speaks, apologizes  —  A few days after former Creed frontman Scott Stapp was arrested — his wife telling 911 and the South Florida cops that she had called to their home that he was "wasted" and had thrown a bottle at her — Stapp is trying to clear his name.

Isaiah Washington Checking Out of Grey's Anatomy?  —  The doctor may be out on Grey's Anatomy.  —  On the May 17 finale, Dr. Preston Burke left his tentative bride-to-be, Cristina Yang, on their wedding day...and now it looks possible that Isaiah Washington is taking off as well.

Lindsay Lohan's 21st Birthday Blowout  —  Lindsay Lohan doesn't turn 21 for over a month, but plans for her big bash - which will take place over two days in Las Vegas — are already in motion.  —  A Lohan source tells Us that on July 2 and 3, the star and pals will take over a floor of Caesars Palace …

Sheryl Crow tries 'nesting'  —  Sheryl Crow is one happy rock chick.  —  In her first interview and photo shoot as a brand-new mom, the singer coos about spending the past three weeks holed up in her Los Angeles mansion with her just-adopted newborn son, Wyatt.

Memo Pad: B-Day... New Face... Break Room...  B-DAY: Will Kent Brownridge reenter the magazine business along with Quadrangle Group by winning the bid for the Dennis Publishing trio of titles for sale: Maxim, Stuff and Blender?  Media insiders may find out before they hit the beach for the long holiday weekend.

Magician Criss Angel To Try Escape Stunt From Concrete Block Above Times Square  —  NEW YORK (AP) - Magician Criss Angel plans to hang in a cube encased in concrete and suspended 40 feet above the ground near Times Square next month in a stunt that will test his Houdini-like ability to escape.

EXCLUSIVE: JAKE GYLLENHAAL TAKES THE EUROSTAR  —  A Towleroad tipster was riding on the Eurostar train between Paris and London yesterday, and sent in these photos of a sleepy Jake Gyllenhaal riding in the same car.  I think we may have the first-ever photos of a sleeping Gyllenhaal.

Mischa Barton — Chronic Smoker  —  How does Mischa Barton celebrate making it to Cannes Film Festival?  —  Well, we're not sure what Mischa's lighting up, but she's no doubt enjoying her time off the French coast ... on designer Roberto Cavalli's yacht.  She sure does love those homemade ciggies ...

Jessica Alba's Bad Girl Side Revealed  —  This wasn't exactly what I had in mind when I prayed for Jessica Alba's bad girl side to finally shine through.  I was kinda hoping her first public run in with the law would include the likes of Lindsay Lohan, Paris Hilton, lots of booze …

What the F*@k Happened to Mena Suvari?  —  Cutting off all her hair, throwin' out gang signs...what happened to the American Pie cutie?  —  SEE MORE AFTER THE JUMP »

Kelly Ripa Rides the Bull  —  One of our horrendously hot readers, Chris, was sexy enough to send these pictures of Kelly Ripa riding a mechanical bull on Bourbon Street in New Orleans this past weekend.  The bar was minding its own business until Kelly showed up for this photo-op, and Chris had a camera.