Chris Brown was granted special permission to leave rehab for a few hours on Sunday to participate in a toy drive on Melrose Avenue in Hollywood, and it looks like the 24-year-old singer made this little girl's day! Well, her and dozens of other fans and children in need...

The charity drive was hosted by his clothing line, Black Pyramid and the skateboard company Brooklyn Projects, and it ran from 1pm to 4pm. Chris tweeted afterwards, "Thank you to all the fans who brought gifts for the kids today. Have a wonderful holiday. You've made a merry Christmas for a young child!"

Under the agreement with the facility where he's been staying, Brown was required to return immediately after the event, at which point he would undergo a drug test. The facility gave him just enough time to travel to and from the event, and they made it clear that if he misbehaved at any point during the afternoon (or was a few minutes late when he came back), he would be kicked out of rehab. And seeing as his time in rehab was court-ordered after a judge revoked his probation, you know what that could have meant -- Breezy going back to jail!

Brown's probation was revoked earlier this month by Los Angeles Superior Court Judge James R. Brandlin after the singer allegedly assaulted a man in Washington D.C. in October. Brown's probation stems from his 2009 assault on then-girlfriend Rihanna, and clearly the altercation with the man in D.C. was a violation. The judge sentenced Brown to 90 days in rehab for anger management, and he also ordered the R&B star to return to court on February 10 for a progress hearing.

Well Gwen Stefani wasn't totally relaxing, but given the size of her baby bump, she wasn't exactly able to chase Kingston and Zuma around while they were goofing off on a swing set!

Gwen took her boys to a play date in Los Angeles on Saturday, and she showed off her pregnant belly in yet another fashionable ensemble. Based on the size of her bump, we're guessing the No Doubt singer is due sometime in February ... maybe even Valentine's Day? You know Gwen would just love that!

Madonna made an appearance on Saturday Night Live, and the 55-year-old singer wore a pair of glasses, a pinstriped suit and a massive hair poof for her sketch with Justin Timberlake and Jimmy Fallon.

Madge sat down for a discussion on The Barry Gibb Talk Show, with Jimmy playing the legendary Bee Gees singer. Jimmy asked the Material Girl, "You've travelled all over the world, you're an observer of human nature - Republican or Democrat - why can't people get along?"

"In my experience politicians," Madonna replied. "It doesn't matter which country you come from, as long as they don't put their personal ideology above doing the right thing, there will be unity. It's simple." But Madonna interrupted "Barry" a few minutes later, to which he sputtered, "You already answered the question woman. You think you can come on my show and say anything you want to me?"

But as usual, Madge was able to get her way, and everyone kissed and made up -- and the real Barry Gibb even stopped by to show the boys how to do a real falsetto. Check out the video below!

Mariah Carey certainly knows how to heat things up for the holidays!

The 43-year-old singer posted some sexy photos on Instagram before hopping in the hot tub with hubby Nick Cannon and their adorable twins, and keep in mind she's in Aspen, where the temps are in the teens overnight!

"Warming up for the hottub moments!" Mariah wrote, later adding, "It's just a tradition #aspen#coldyethot." Cold yet hot indeed!

Mariah also posted the adorable shot below with Monroe and Moroccan and wrote "Misty wonderland with dembabies!"



So cute!

We love that he's smiling, but that hair? Eeks!

On Saturday Robin Thicke arrived at Los Angeles International Airport from Miami, and though a handful of fans asked for a autograph, he breezed right by them with his greasy locks and headed to his car. Rude!

Robin will be heading back to Miami to host a bash at the SLS hotel, and on February 21 he will kick off his North American tour with Jessie J and DJ Cassidy in Atlanta. Looks like we're going to be seeing lots more of him at LAX!

On Saturday Heidi Klum and bodyguard/beau Martin Kristen stopped by the Grove in Los Angeles with her four children, and the group hit up the American Girl store, said hi to Santa Claus and even took a ride on the tram.

So is was Heidi doing last minute shopping with her kids? Not likely! "I start in the summer!" Klum told E's Marc Malkin. "I start everything early. I'm a planner. You have to be organized. I have lists—pages and pages of lists."

Gifts for Leni, Lou, Henry and Johan include unicycles, a globe, and Heidi added, "My little one wants every Pillow Pet and every Glow Blanket under the moon. It's crazy. Every five weeks they come out with a new one. The whole room is glowing."

And what does Heidi want? "I don't really want anything," she said. "I want my kids to make something for me. I have a whole wall that's dedicated to all the things they've made for me." Awwww! Heidi also revealed that they will be staying in Hollywood for the holidays. "My mom and dad were just here," she said. "It was so nice. So we're just going to hang at home. It's nice to be home."

Josh Duhamel went to Early World Restaurant in Brentwood on Saturday morning, and the hunky dad carried out his adorable son Axl after grabbing a bite to eat.

Earlier this month Josh revealed that he and Fergie will be taking it easy over the holidays. "Our Christmas plans are pretty simple this year," he told E! News at the March of Dimes Celebration of Babies luncheon in Beverly Hills earlier this month. "I like it that way. We're home, just family around here. My mother's out here right now. My sister's coming out next week. Other than that we're just going to stick around here." Sounds like the perfect Christmas to us!

Awww and the little guy was totally passed out cold:

Yesterday Hilary Duff and her adorable son Luca went shopping at James Perse in West Hollywood, and Hil's little boy wore a Santa hat and appeared to be quite the trooper while his mom indulged in some retail therapy.

Later in the day Hil and her boy made gingerbread houses, and she posted the pic below on Twitter and wrote, "My new ride..." It appears as though Luca made her a gingerbread truck ... is that not the cutest thing ever?!