Samantha Ronson got carried away at Fashion Week in New York City ... by herself.

The DJ toted her own garment bag -- wonder what's inside! You didn't expect Sam to wear that Cosby sweater during Fashion Week, did you? ... Well, actually, we wouldn't have been surprised. Sam has always had her own style!

Ronson was on hand to DJ her sister Charlotte Ronson's fashion show. She almost didn't make it! Earlier, she'd been at the U.S. Open semi-finals, where she Tweeted, "Come on Federer. wrap this up- i gotta go dj ... "

And how did Sam sum up Fashion Week? "Um, is it Halloween in NYC? #fashionweek," she wrote.

On Saturday Sandra Bullock and her adorable baby Louis were spotted arriving at LAX to catch a flight, and we're not sure where they're headed, but we do know this: Sandra is NOT pregnant.

After it was reported that the Oscar winner had a bun in the oven, she reached out to Entertainment Tonight to clear up the rumors. During Wednesday's broadcast, ET host Samantha Harris stated, "[Bullock] is not pregnant and has no plans to adopt another baby at this time." So what about the stories that she's dating the oh so dreamy Ryan Reynolds? Bullock tells the show that she is "not romantically involved" with her Proposal co-star.

A pregnant Jennifer Garner picked up her daughter Violet from school yesterday, and later on we spotted her carrying two-year-old Seraphina as the group ran errands in Beverly Hills. Now that she's got another child on the way, it looks like little miss Seraphina is going to be following in the footsteps of her older sister and using her own two feet to get around!

While the girls were out and about, daddy Ben Affleck was snapped on the Los Angeles set of Argo during a break from shooting. Not only does Affleck star in the motion picture, but this is his third director credit for a feature film. Can't wait to see the trailer for this one!

Can you believe Jessica Alba gave birth to her second daughter less than a month ago? She looks absolutely AMAZING!

Yesterday the 30-year-old actress took a break from mommy duty (and from promoting her new flick, Spy Kids: All the Time in the World) to get a manicure/massage in Beverly Hills, and it looks like this was just what the doctor ordered!

So what's she doing to keep her fab figure in shape? She recently tweeted some post-pregnancy workout tips and revealed that she got back into the gym about two weeks ago. "Start with walking and throw in 3 sets of lunges 20 per leg. Your could do it while strolling your baby," Alba wrote. "My doc told me I could start after 2 wks. I'm going light, stationary bike and elliptical."

On Friday Kris Humphries and Scott Disick were snapped at the Lincoln Center during Mercedes-Benz Fashion Week, and a little bit later the two sat front row at the Jill Stuart Spring 2012 show. Yesterday Kim and Kourtney Kardashian did a photo shoot with the boys, and Kourt tweeted, "Fabulous major glammed out photo shoot today with @KimKardashian @ScottDisick and @KrisHumphries. Channeling Sharon Stone in Casino. I wish." Can't wait to see the finished product!

So who else attended the Fashion Week festivities? We spotted Kellan Lutz and his guns, Whitney Port and Emma Roberts ... check out the gallery below for more hot pics!

Justin Bieber chatted with Women's Wear Daily on Thursday, and the 17-year-old pop phenom revealed that he'd like to start a family in the next few years!

"Well by 25 or 26, I want to see myself, like, married or start looking for a family," he said. "I want to be a young dad." However, he did clarify that he's not in any rush to walk down the aisle. "If the time is right, I definitely want to be married by 25," he added. "One thing -- I'm not looking to get married now." Still, it looks like things are going well with lady love Selena Gomez. "She's amazing," he gushed. "She's my girlfriend right now."

Bieber also opens up about his childhood and being raised by a single mom. "I didn't have a lot. I grew up in geared-to-income housing. It was always rough for me," he said. "We went to the food drive all the time. I always thought, 'If I ever get rich or famous, I will help people who are less fortunate than me.' This year I'm helping with the food drive in my hometown. I'm just trying to do as much as I can with everything I do."

Looks like someone's craving a milkshake and fries!

On Friday Britney Spears stopped by McDonald's in Culver City, and the pop princess had her bodyguard order up at the drive through as she rode shotgun. While Brit Brit was getting her burger on, ex-husband Kevin Federline was spotted driving around in the same neighborhood after visiting their sons Jayden James and Sean Preston at school.

Hint: She'll be dancing her way onto the small screen next week, and she was once romantically linked to an uber A-list actor...