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Singer Beyonce Knowles attends The 53rd Annual GRAMMY Awards held at Staples Center on February 13, 2011 in Los Angeles, California.

Singers Beyonce and Rihanna attend the Gucci and Roc Nation Pre-GRAMMY brunch held at Soho House on February 12, 2011 in West Hollywood, California.

H to the...Happy Birthday! Jay-Z and Beyoncé hit Skylight West this week to celebrate their friend's birthday, and they weren't the only bold-faced names in the house. Diddy, Russell Simmons and Gayle King all turned out to fete a certain hip-hop heavyweight at an Egypt-themed party. So who was blowing out the candles? It was Mary J. Blige, who turned 40 on Tuesday (aka "1/11/11") in NYC. Her hubby, Martin Kendu Isaacs, organized the surprise soiree, which began with a dinner party at 9 p.m. and went all the way until 3 in the morning. Mary offered toasts to Diddy, for pushing her so hard, as well as Beyoncé, whom she called "an inspiration". Another special surprise was when Anita Baker took the stage to croon "Caught Up in the Rapture." "Mary was moved to tears and started singing along with Baker," a source tells us.

Beyonce Knowles attends The Cosmopolitan Grand Opening and New Year's Eve Celebration with Jay-Z and Coldplay at Marquee Nightclub in The Cosmopolitan on December 31, 2010 in Las Vegas, Nevada.

Beyonce and younger sis Solange Knowles hit up the grand opening of Marquee Nightclub inside The Cosmopolitan on Thursday (December 30) in Las Vegas. The sisters partied with Beyonce’s hubby Jay-Z and Solange also DJ’d in the club’s Library room.

The opening party of the Cosmopolitan hotel in Las Vegas, going down on New Year's Eve, will feature performances from Jay-Z and his pal Chris Martin's band Coldplay, each copping up to a cool million bucks to play. Also on hand will be Jay's and Chris's respective significant others, Beyoncé and Gwyneth Paltrow, although they will not be performing (officially, that is). But, yeah: Best double date ever!

It's a big week in Sydney. Jake Gyllenhot Gyllenhaal and Anne Hathaway are in town. And Oprah and her troops are getting on a plane TONIGHT and will arrive in Sydney tomorrow. Her guests are flying in via Qantas, while Oprah will arrive in her $42 million private jet. The group will then be split-up and taken to iconic destinations including the Great Barrier Reef, the Hunter Valley, Melbourne and Kangaroo Island. Oprah will shoot three shows, two at the Opera House on December 14 and one show featuring the footage from her travels around Australia. High-profile guests are rumoured to be U2, Hugh Jackman, Russell Crowe, Cate Blanchett, Nicole Kidman, Keith Urban, Beyonce, Jay-Z and Bon Jovi. Get ready for serious Oprah-licious shenanigans!

Beyonce Knowles attends the launch of Lorraine Schwartz's "2BHAPPY" jewelry collection at Lavo NYC on November 22, 2010 in New York City.

Beyonce Knowles attends a screening of "I Am... World Tour" at the School of Visual Arts Theater on November 21, 2010 in New York City.

Beyonce attends Experience the Turn at The Box on November 12, 2010 in New York City.

With rumors swirling that Beyoncé is expecting her first child, the singer was content to play the role of supportive wife during a party in Miami Beach with hubby Jay-Z on Wednesday night. The couple kicked back at the Delano Hotel, where Jay-Z was working with Bing to launch the DECODED search experience, an Internet scavenger hunt based on his new book. And though it was Beyoncé making headlines, she left the spotlight all to her husband. As the rapper gave interviews, Beyoncé slipped away into a poolside bungalow, where she ordered snapper, salad and sparkling water from the hotel's Blue Door Fish. "She was wearing a skintight dress that left nothing to the imagination," an onlooker tells PEOPLE. "There were no remote physical signs that she was pregnant." It wasn't until later that she emerged, smiling, to hear Jay-Z give a speech. "She almost went unnoticed. She really made it a point not to be in the spotlight, that it was his night," says the onlooker. "At one point, she actually introduced herself to a Jay-Z fan, who was shocked that she was standing there." Later in the evening, the couple retreated to a bungalow together. "They were adorable," says the onlooker. "She was sitting on his leg and they were watching TV. They were lovey-dovey." On Thursday's Ellen DeGeneres Show, Beyoncé's mother, Tina Knowles, denied that her daughter is expecting – yet.

As celebrity fans become more and more de rigeur, Italian designers are catering to the likes of Beyoncé, Katy Perry, Lady Gaga and Kylie Minogue. Beyoncé, in particular, seemed to be making the rounds among Italian footwear designers during the Milan collections, picking out styles for her new album cover and tour. At Casadei, she chose a multicolored Swarovski ankle-strap sandal from the Atelier Collection, which designer Cesare Casadei said referenced 1980s opulence. He stressed that made-in-Italy craftsmanship is especially evident in the style, as it takes one person several days to mount and sew the 800 large Swarovski Elements crystals onto the straps. At Giuseppe Zanotti, Beyoncé was also one of the first to see the new handbag collection, which includes a structured envelope clutch called the Brighton that will be exclusive to the designer’s boutiques, among them the new Beverly Hills, Calif., location bowing in November to cater to his growing celebrity clientele. Beyoncé’s choice was the mosaic mirrored Brighton, along with several styles from the spring footwear collection, which Zanotti described as “much lighter with fewer platforms, and more about allure than over-the-top sexiness.”

Beyonce attends at Keep A Child Alive's 7th annual Black Ball at Hammerstein Ballroom on September 30, 2010 in New York City.