Selma Blair looked stunning on the red carpet at The Venice Film Festival on Sunday ... especially considering the 39-year-old gave birth only a little more than a month ago! Wow!

The actress was on hand to promote her new movie, the well-reviewed comedy Dark Horse. She plays the love interest in the pic, which co-stars Christopher Walken and Mia Farrow.

She's a mom who's workin' and workin' it!

Denise Truscello

Rap superstar Diddy and sexy R&B diva Christina Milian know how to have sexy fun in the summertime!

Diddy, 41, hosted a wet and wild party at the Palms Pool & Bungalows at the Palms Casino Resort in Las Vegas. We're told the rap mogul grabbed the mic and got the crowd going nuts with a performance of “Mo Money Mo Problems."

Milian, 29, left baby Violet at home for some quality adult time. Looking good, Christina!

Her directing career doesn't seem to be going over well, but luckily Madge always has music!

While at the Venice Film Festival, Madonna revealed that she's working on a new album and plans to release it next spring!

"I've started a little bit of work in the studio," she said, saying she will work on the album in New York through the end of this year and drop her first single in February or March.

The album will be her first since cutting ties with Warner Bros. Records. Her last album, 2008's Hard Candy, debuted at No. 1 and sold almost 4 million copies worldwide. But, the record industry has changed a lot since 2008 thanks to the Internet.

Baby Willow has the coolest parents!

Rock star Pink and her man Carey Hart took the 3-month-old little girl to the Malibu Kiwanis' 25th Anniversary Chili Cook-Off and Carnival. Such an adorable face!

By the looks of it, Pink had a fantastic time sampling the various chilis and getting on the rides while Carey watched the little one. Plus, we're lovin' that big, blue monkey riding on the back of the stroller.

Good family fun!

The Real Housewives Of Beverly Hills Camille Grammer and her kids Mason and Jude hit the Malibu Chili Cook-Off and Carnival on Sunday, where they won some prizes!

Grammer, who celebrated her 43rd birthday over the weekend, probably needed some relaxing time before Monday night -- when the premiere of the new, second season of Housewives premieres on Bravo.

So while her kids got some stuffed animals, what did Camille get for her birthday? A Chanel tennis racquet, of course! She Tweeted, "My girlfriends got me a Chanel Tennis Racquet.. Wonderfully decadent;)."

Indeed.

Director Brett Ratner has apologized over a joke made in the trailer for his new action/comedy Tower Heist.

In the spot, Eddie Murphy's character calls Ben Stiller's "little seizure boy." He says: "All the kids would be crying -- your eyes would be rolling back, the foam coming out -- it was very scary!" (watch above.)

Heroes actor Greg Grunberg, who has a 15-year-old epileptic son, called for a boycott of the flick, Tweeting, "TERRIBLY OFFENSIVE TRAILER for #TowerHeist – Making fun @ people w/ seizures is NOT FUNNY & WRONG! 'Seizure Boy!' REALLY? #Boycott RT." He said of the studio, "They probably just don’t even realize the people they are offending and how this could possibly offend people.”

But Ratner (right) apologized over the weekend, saying, "I sincerely feel bad," and promising to ask Universal to remove the joke.

Meanwhile, Ratner is working to get Murphy as next year's Oscars host.

What Petra and Tamara Ecclestone want ... they get! The sexy socialites, who are huge fans of $10K Birkin bags, are the daughters of billionaire Formula 1 head honcho Bernie Ecclestone.

The Croatian sisters, who certainly know how to make heads turn, enjoyed a double date over the weekend at Katsuya in Hollywood. Check out just ONE of Petra's pricey rides ... a $200K Lamborghini! She also just received a brand new white Rolls-Royce Phantom as a wedding gift.

So HOW rich are they? Petra, 22, recently tied the knot to businessman James Stunt in a lavish, $5 million wedding in Rome. Her Vera Wang wedding dress was $130,000. The wedding entertainment happened to be the one and only Black Eyed Peas who performed for a reported $2 million.

The newlyweds came home to their Los Angeles mansion once owned by Aaron and Candy Spelling. Petra paid $85 million cash for her new digs!

Her stunning 27-year-old sister Tamara, a model and underwear designer, has been dating beau Omar Khyami for one year. Could another mega-million dollar wedding be in the near future? Papa Ecclestone better save up ... NOT.

The sky's the limit for the Ecclestone girls!

Supermodel Alessandra Ambrosio and fiance Jamie Mazur got down to some monkey business at the Kiwanis' 30th Anniversary Chili Cook-Off and Carnival in Malibu on Sunday!

The event became a celeb hotspot -- LeAnn Rimes and Eddie Cibrian, Kevin Dillon, Camille Grammer, Tori Spelling and Gary Busey also brought their kiddos and crew to the summer picnic.

Alessandra and fiance Jamie were almost too good looking for words as they played with daughter Anja. They traded -- both wore a cute, unisex hat and both carried Anja.

The couple has been engaged for several years now -- Anja was born in 2008! We can't help but wonder ... when will they tie the knot??