Christina Aguilera dined at Spago in Beverly Hills last night with her boyfriend Matt Rutler, and we're not sure if it was a combination of cocktails or high heels, but the 31-year-old singer needed quite a bit of assistance getting to her car -- at one point she seemed to have no less than three people helping her walk!

Xtina showed off her newly dyed pink and purple hair, and as always, she wore her bright red lipstick and a form-fitting dress. Maybe she was celebrating the release of her music video for "Your Body"? Party on!

Before a family lunch with sister Kim and baby daddy Scott Disick, Kourtney Kardashian and her brother Brandon (step-brother if you want to get technical) were snapped shopping for kids clothes with her son Mason. Hopefully they picked out a few duds for little miss Penelope too!

While we're not entirely sure what Kim was blabbering about, her new kitten Mercy has her own Twitter account, but it's in no way connected to the reality starlet. Kim recently blocked the user @KardashianKat, who lists her location as "Probably in some stupid purse."

Someone's got their hands full! Where's the nanny (or dad Cash Warren, for that matter) when you need 'em?

Jessica Alba was snapped with her two daughters in Santa Monica on Friday, and the ladies attended a barbecue at her Honest Company office. Earlier in the day the 31-year-old actress hit the gym, and she's currently prepping for Sin City 2, which should begin filming next month. We're not sure how she does it all -- and looks so fabulous 24/7!

It's bad enough that he cheated on her and fathered a son with their housekeeper, and now that Arnold Schwarzenegger is promoting his book, you'd think he'd try to make amends with ex-wife Maria Shriver, but apparently not!

TMZ reports that Arnold never even offered an advance copy of the book to Maria, and that 60 Minutes producers didn't bother contacting her until after his new interview was shot. Apparently calls were made to friends of Maria to see if she had a general comment about the book, but no specifics were given about the content of the autobiography, Total Recall: My Unbelievably True Life Story.

"The piece is a blow j** for Arnold. Lesley Stahl just fawned over him," a source tells the website, adding that Maria "knows the book is a big PR stunt to get back in the public's good graces."

For his part, Arnold told the show, "She knows that it's about my whole life and that I would not write a book and kind of leave out that part and make people feel like, 'Well, wait a minute. Are we just getting a book about his success stories and not talk about his failures?' I wanted to write a book about me."

And her sweet tooth apparently -- that's a delicious Hershey's chocolate bar in her hand!

Rihanna departed from JFK Airport in NYC on Friday evening, and she strutted through the terminal like she owned the place, wearing bedazzled shades, torn jeans, a Trap Star tee, Louboutins and a satin jacket. Then again, do we know anyone else who looks this sexy and stylish when they're catching a plane? (With the exception of Victoria Beckham, no!)

Shortly after taking off, RiRi tweeted, "Flight attendants just made me do a full on photoshoot in my seat! I better get some free nuts." We're sure she did...

We'd expect a supermodel to look good in spandex, but Rosie Huntington-Whiteley takes it to a whole new level of hotness! The 25-year-old Victoria's Secret stunner was snapped at the gym in Beverly Hills yesterday, and she even flashed us a sweet smile on the way in -- what a doll!

In other Rosie news, she recently tweeted a pic of her dachshund and wrote, "Best news ever!! My baby, Ruby is pregnant! Puppies coming soon!"

But what we really wanna know is ... do Rosie and boyfriend Jason Statham plan on procreating any time soon? All of her fellow VS angels seem to be popping out babies every few months...

While we're guessing she's happy to reunite with beau John Mayer, it looks like Katy Perry is still devastated over the death of her ex-boyfriend, Sons of Anarchy actor Johnny Lewis.

The 27-year-old singer returned home from Japan last night, and she clung tight to her bodyguard and showed hardly any emotion when she got into her car. She still hasn't released a statement about Lewis, who was found dead in a driveway on Wednesday after allegedly murdering his 81-year-old landlady, Catherine Davis. Lewis and Perry dated from 2005-2006, and police told the media that they believe Lewis killed Davis' cat and then beat her to death while under the influence either PCP or meth.

On a lighter note, it was recently announced that Katy will accept Billboard’s Woman of the Year Award at the 2012 Billboard Women in Music event in NYC on November 30 ... congrats!

After a whirlwind trip to Paris for Fashion Week, Kristen Stewart arrived back in LA from France.

The Twilight actress, who sat front-row at this week's Balenciaga runway show, put on a comfy white T-shirt, jeans and sneakers for her long flight home. As usual, KStew wasn't in a smilin' mood, but we're lovin' those lighter locks!

Just last night, KStew hit up "La Fidelite" in the trendy St. Martin Canal neighborhood wearing a striped romper. The "Faithful" restaurant happens to be a former brothel. Perhaps the brunette beauty was sending Robert Pattinson a message.

Oui, oui!