The Stefani-Rossdale clan are the epitome of adorable Fall fashion!

While heading to Grandma's house for Thanksgiving, Gwen and Gaven looked picture perfect ... with daddy holding son Zuma and big boy Kingston leading the way.

The No Doubt singer looked flawless as usual ... full face of makeup, killer boots and a kick-butt jacket.

We're lovin' how Gwen manages to keep her Harajuku Mini collection in the spotlight. Check out her black tote! Now THAT'S a savvy businesswoman.

Mischa Barton's fashion sense has come a long way in recent months, and wow, she's looking fit and fabulous.

The former OC actress, wearing black tights and short shorts, hit up the Music Box Theatre in Hollywood to catch Morrissey in concert.

The leggy actress wasn't the only celebrity in attendance. Showing off her slender post-baby bod in an all-black ensemble paired with killer boots, Kimberly Stewart also enjoyed the show and took a night off from watching 3-month-old daughter Delilah. Perhaps the baby was home with daddy Benicio Del Toro?

Girls just wanna have fun!

Fresh off his win from Dancing With the Stars, J.R. Martinez is letting his feet rest ... however, his fingers will be mighty busy writing a tell-all book!

The Iraq war veteran and actor began writing his tome before the dancing competition began, but now that the show is over, Martinez can get back to work.

His rep tells the NY Post that the book will be "full of things people don't know." Although the book has not yet found a publisher, the interest has grown since his DWTS win, according to the site.

Since 2003, Martinez has undergone 33 surgeries after his Humvee triggered a land mine in Iraq and he suffered severe burns over most of his body.

Martinez will be the Grand Marshal for the Pasadena Tournament of Roses Parade taking place on January 2.

Following in the footsteps of her American Idol colleague Scotty McCreery, Lauren Alaina forget the words to a portion of the "Star Spangled Banner" while performing at the Detroit Lions/Green Bay Packers game. However, the blonde cutie recovered well.

After singing the line, "What so proudly we hailed at the twilight's ...," the country star went silent for a few notes ... but then picked back up. Whew!

Alaina later Tweeted:

"I'm not a robot. I have No excuses. I messed up. You know what can ya do. At least didn't fall down again. Thank you everyone for the kind words. But the truth is I messed up. I'm gonna spend the rest of the day being thankful for all my blessings."

As for Scotty McCreery's "Star Spangled" mess-up, it happened at the World Series back in October. Even Christina Aguilera botched the lyrics to the song at the Super Bowl.

It happens to the best of them!

Although it may be anyone's guess who Demi Moore was referring to when she finally broke her silence via Twitter on Thanksgiving Day, all signs point to soon-to-be-ex-hubby, Ashton Kutcher.

Moore, who so far appears to be keeping the "@mrskutcher" moniker, shared via Twitter yesterday:

"Why do we have only 1 day for giving thanks? Is that why so many people feel unappreciated? Make this 1 of 365 days of Thanksgiving!"

Ouch.

It's unclear who the 49-year-old star is spending her holiday with -- Rumer, Scout and Tallulah are in Paris with dad Bruce Willis.

Meanwhile Ashton had a more light-hearted Tweet for fans this holiday: "I’m thankful for family, friends, you, & time to reach my potential. What are you thankful for?"

It was only a quick appearance, but Cameron Diaz stole the show in her ultra short LBD as she surprised Jay Leno during his "Ask Jay" segment on The Tonight Show Thursday.

The 5'9 stunner also donned a pair of sexy $1,500 gold Lanvin platform wedge, to give her even more height!

While the Bad Teacher star recently split from New York Yankees baseball player Alex Rodriguez, she has reportedly moved on with an even bigger high-profile guy.

Cammie has been spotted getting cozy with none other than rapper/mega-mogul P. Diddy, and the pair were even seen looking all lovey-dovey over lunch together at Scarpetta in Beverly Hills last week -- is there a new Hollywood power couple on the rise?

Check out Diaz's show-stopping appearance on Leno at @ the 4:40 mark!

Twitter

Paris Hilton found a way to mix business with pleasure while vacationing in Hawaii ... and in the process, the heiress shot a gorgeous swimsuit calendar.

Though she's now back in LA, Princess P Tweeted the above bikini photos from the photoshoot. The 30-year-old beauty also wrote the following message:

"So excited to have a nice Thanksgiving dinner with me family. Love them so much & so grateful to have them in my life."

Well put, Paris! Click thru to see another sexy bikini photo from the shoot.

Justin Bieber has teamed up with old school R&B group Boyz II Men for the new single "Fa La La" ... off his new album Under The Mistletoe.

The black and white video shows a very grown-up looking Bieber dancing and singing alongside the foursome. The "Baby" singer has admitted to being a fan of Boyz II Men since he was a little kid. Wait ... isn't he still a kid?

Wanya, one of the four members of the band, recalls a funny story involving Bieber and their 90s hit song, "I'll Make Love To You." He tells MTV News:

"[Justin] told us his mum didn't want him to sing I'll Make Love to You, so he'd sneak and go sing it somewhere."

Awkward! Despite the very adult lyrics, we have a feeling Biebs sounded phenomenal!