If there is ever a Grease 3, we know who would make the perfect lead!

Kelly Osbourne looked just like a Pink Lady when she arrived at The Grove in LA on Friday to film a segment for Extra. The Fashion Police co-host looked greaser-fab in a neon pink and black ensemble, complete with matching lipstick and a '50s bouffant 'do.

So why all the pink? Kelly was chatting with the TV show about breast cancer and the Hard Rock Hotel's Pinktober efforts in support of Breast Cancer Awareness month. She even rocked a pink Hard Rock guitar pin to champion the cause!

You go, Kelly!

After attending morning service at the Kabbalah Centre in Los Angeles, Ashton Kutcher was asked about the recent cheating allegations with 23-year-old Sara Leal.

The 33-year-old actor attended the service with wife Demi Moore amid rumors that the couple are headed for a split.

Hear how Ashton responds to whether he feels bad about the scandal.

Wondering if we should nickname Alex Pettyfer "Happy Cheeks?" Check out that yellow happy face on his right butt cheek!

The 21-year-old Magic Mike actor was happy to show off his muscular rear-end while on the set of the Steven Soderbergh-directed stripper film.

Channing Tatum, who also stars in the flick, has been flaunting his sculpted physique, as well ... but unfortunately the G.I. Joe star hasn't been this cheeky.

Magic Mike doesn't hit theaters until next year, but we're excited to already catch a glimpse of Mr. Pettyfer's goods.

Ashton Kutcher and Demi Moore spent the morning together at the Kabbalah Centre in Los Angeles.

An X17 photographer on the scene tells us:

"Demi and Ashton were really dressed up for today's service. While Ashton pulled up in their black Lexus, Demi exited out of a side door of the Kabbalah Centre and quickly jumped in the car. She clearly did not want to be photographed."

Demi recently returned from promoting her Lifetime movie "Five" in New York to spend time in Los Angeles with her husband Ashton Kutcher ... amid allegations the Two and A Half Men star had an affair with 23-year-old blonde Sara Leal.

Our photographer adds:

"Ashton really looked worried. He wasn't really in a good mood -- his M.O. was definitely to get into the Centre and get out without being seen."

Arnold Schwarzenegger's hottie son Patrick stopped by Barneys New York in Beverly Hills for a little impromptu shopping trip on Thursday, and now that he's landed a modeling job with Hudson jeans, the guy's finally got his own money to burn!

The 17-year-old had a minor brush with the law last week when he was pulled over by police in Santa Monica for speeding in his father's 2009 black Audi, after going 54 mph in a 35mph zone.

Patrick, who turned 18 this month, was cited for the violation, and sent on his way.

Demi Moore has returned from promoting her Lifetime movie "Five" in New York to spend time in Los Angeles with her husband Ashton Kutcher ... amid allegations the Two and A Half Men star had an affair with 23-year-old blonde Sara Leal. The GI Jane star is still wearing her wedding ring!

The couple, who have been married for six years, have been spending time apart lately while Moore promotes her film ... even reportedly celebrating their sixth wedding anniversary in separate locations.

Ashton, 33, and Moore, 48, spent last night together at their home .... going about their everyday business. The Punk'd creator showed up for work Thursday despite the Jewish New Year holiday. And later in the day, Kutcher proudly showed off his wedding ring while exiting a motorcycle shop in LA.

Both stars have been unusually quiet on Twitter except for random quotes involving forgiveness and making assumptions.

Can their relationship survive the controversy?

The Jackson family arrived to LA's criminal courthouse as testimony resumed on the involuntary manslaughter case against Dr. Conrad Murray Friday, and the famous fam hasn't missed a moment of the trial since it began this week.

Today Prosecutors called Nonin Medical Executive Bob Johnson, who's company manufactures a device that measures pulse and oxygen levels in the blood, to the stand. Nonin Medical produces the same device that authorities found in Jackson's home after his death.

Johnson told jurors today the model Dr. Conrad Murray was using for Michael had "no audible alarm" and was "never intended to be used for continuous monitoring of patients."

Prosecutors claim Murray never had the proper monitoring and life-saving equipment on hand while he was giving Jackson the dangerous doses of propofol.

Today Jurors will also hear from paramedics who responded to the fateful 911 call on the day of Jackson's death.

Another day, another dance!

Rob Kardashian arrived at Dancing with the Stars rehearsal Thursday afternoon, just after taping a segment for Extra at The Grove in LA ... in the same rolled up pants!

Not that there was any doubt, but Rob proved that he is definitely a Kardashian by showing off his butt as he strut into the practice space. And according to fellow DWTS contestant David Arquette, his "fantastic" booty is "going to be a secret weapon."

Now that's one cool secret weapon! But please, Rob, just toss those pants out already!

Check out more pics of Rob and other DWTS stars (like a gorg Kristin Cavallari!) below.