Britney Spears piled all that hair on top her her head and stepped out for a little shopping — including a stop at Victoria's Secret, which is good because she could use a bra — before heading to dance class in LA yesterday. The rumored VMA nominee waved to the paparazzi before getting to her business. The frenzy around Brit has calmed down since a year ago, but that doesn't mean there aren't a lot of photographers who still spend all their time trying to get the best shots of the pop star, including two who were arrested near her property earlier this week. Guess there's no such thing as calm and quiet when it comes to Miss Spears.

Jennifer Lopez celebrated her 39th birthday in NYC last night out on a date with Marc to catch the Tony Award-winning musical In the Heights. After the show, the very special guests ducked backstage to meet and pose with the cast of the show, which takes place not too far from where Jenny from the block grew up in South Bronx. Of course J Lo looked fabulous, and what else could we expect from the triathelete in training? But luckily we know she made some time for vacation and bikinis with the babies recently too. So happy birthday to the glowing mama, who after a night on the town gets the best present of all: coming home to her little Max and Emme.

Halle Berry didn't lose her baby weight overnight like some celebrity moms seem to, but after giving birth just four months ago she's looking as hot as ever. While she still sports baggy clothes from time to time, she's already posed in a bikini and once again she strutted her stuff in a tight red top on her way to a friend's house in LA yesterday. It's clear that Halle is beautiful — now all we need is a closer look at little Nahla!

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After a quick trip to Paso Robles for a show on Wednesday, John Mayer was back in LA yesterday stopping by one of his favorite places, the camera store. After picking up some new pieces for his gadget collection, John was off for LA fun — including a visit to his girl Jennifer Aniston's place? Or maybe it was another date with his buddy Pete Wentz who was once again gushing about John on his blog. He's got Friday night off, but tomorrow it's up to Marysville for the next stop to show off those pipes.

With a new marriage and new baby on the way, Ashlee Simpson and Pete Wentz have had a ton of adjustments to deal with.  And they’re taking it all in stride.

Last night, the happy couple was spotted on a romantic dinner date at La Loggia Italian Bistro in Studio City, California looking very much in love.

Taking a break from thrilling movie theater audiences, Rachel Weisz was spotted doing some work on a photo shoot yesterday in New York City’s hipster East Village.

The “Runaway Jury” babe looked lavish in a vibrant red costume as she posed like a pro for the Vogue spread, with a jack-o-lantern-faced prop that hinted at a Halloween issue appearance.

For the most part, women hate to get older.  So when it came time to celebrate her 39th birthday, Jennifer Lopez decided to keep things fun with a trip to New York City’s Broadway district to see “In the Heights.”

J. Lo and her husband Marc Anthony dropped into the Richard Rogers Theatre yesterday for the “Waiting for Tonight” singer’s last birthday celebration before the big 4-0 and enjoyed clowning around with the show’s cast.

Back in New York City on business, Nick Jonas can’t go anywhere without a mob of crazed teen girls hounding him.  And outside his hotel yesterday, he made sure to show some love to his fans.

The “Burnin’ Up” rocker looked studly in a white v-neck t-shirt with a pair of vintage-look jeans and some circa-70s brown leather slip on shoes as he was escorted to his car by bodyguard Big Rob.

Everywhere he goes, he attracts tons of attention.  So when Zac Efron was on his way out of Smashbox Studios in Los Angeles, California he ran into a swarm of shutterbugs.

Joined by a mystery blonde gal, the “High School Musical” stud had just finished up a photo shoot and looked hot in a tight black t-shirt and jeans with sneakers.