At Miami Beach last Wednesday, singer Jordin Sparks was sporting an unusual trend—face paint. No, she wasn’t cheering for her favorite Superbowl team; she was making a stand for her cause.

At the 3rd Annual Jordin Sparks Experience at Eden Roc Renaissance, the 20-year-old singer had warpaint that read “I’m M.A.D. Are you?” M.A.D. stands for “Making A Difference,” a project of Sparks Charities.

According to the website:

“This campaign is to encourage others, young and old, to get mad and funnel that energy into making a difference in their communities, families, and world by just doing something… plant a tree, mow your elderly neighbor’s lawn, pick up trash, donate money, write a letter to the troops, visit a sick child, be a friend to the lonely, read a book to a child, volunteer in a soup kitchen… anything. Their personal goal is to bring awareness to teen violence and prevention as they have been deeply touched, hurt, and angered by the amounts of senseless teen violence as of late.”

Look, even fellow American Idol alum David Archuleta is a supporter!

Here’s an early Christmas treat for everyone—a gallery of hot musicians who rocked out at Capital FM's Jingle Bell Ball at the O2 Arena in London on Saturday and Sunday.

The musical extravaganza catered to all types of fans. R&B/hip-hop lovers grooved to the tunes of Ne-Yo, Flo-Rida, Janet Jackson, and Dizzee Rascal. Boy band hysterics partied like it’s 1999 with Westlife and the Backstreet Boys. The Sugababes, JLS, and Pixie Lott showed off their UK flair with their latest hits. The Noisettes and Metro Station added some rock flavor to the scene.

The event’s showstoppers were the sexy popstars who dressed like it’s the last day of 2009. There was Lady Gaga who proudly made it to Santa’s naughty list, thanks to her “cherry, cherry, boom, boom” bikini. There was teen sensation Miley Cyrus who raised eyebrows with another provocative outfit. The Saturdays opted for skimpier costumes for their performance. Shakira’s hips didn’t lie as she performed “Whenever, Wherever” onstage.

The two-day show was a success, if you count the 16,000 people who attended day two alone. Fans of all ages uploaded their personal accounts of the event on Capital FM’s website.

Lady Gaga was ushered into the venue as Santa’s reindeer. She quickly changed into a red-hot bikini, fishnet stockings, black lace-up boots, and her famous disco stick when she hit the stage for her six-song set. Check out her red-hot outfit here.

Miley Cyrus brought the “Party In The USA” to London wearing her trademark ultra short shorts, open shirt, and revealing bra.

American Idol Jordin Sparks performed her hit “Battlefield.”

Jade Ewen, Heidi Range and Amelle Berrabah of the Sugababes

Shakira sported another crazy ’do, but her swinging hips did a good job.

Although Halloween seemed tamer this year, we still managed to round up Hollywood's best dressed. It’s that time of the year when freakish suits and outlandish getups get our thumbs up. Tell us which costume you loved best.

Paris Hilton downs a few drinks and does a cancan around Tinseltown.

Mariah Carey and hubby Nick Cannon arrive at a New York party dressed in matching angel costumes.

Brentwood—Kate Beckinsale as Adam Ant, husband Len Wiseman as Eric Draven from The Crow, and daughter Lily as a magician.

Toy Story—Gwen Stafani-Rossdale takes the whole family for some Halloween fun. She goes as Jesse the Cowgirl with her dinosaur-clad tots Kingston and Zuma. Boo to hubby Gavin Rossdale, who would’ve made a cool Woody.

Emile Hirsch takes off from Never Never Land and heads off to Club XIV.

Eliza Dushku and boyfriend Rick Fox dress up like a couple of zombie gangsters for a Halloween party at Club XIV.

Newlyweds Khloe Kardashian and husband Lamar Odom dress up like caped crusaders Batman and Catwoman.

Jordin Sparks leaves Heidi Klum's Halloween party at Voyeur in Los Angeles as a disheveled Dorothy from Wizard of Oz. Holding her hand is boyfriend Steph Jones.

Jessica Alba goes as Dora the Explorer, while her beau Cash Warren (not pictured) comes as Diego.

Star Wars was the theme on NBC’s Today Show; Anne Curry as Darth Vadar, Matt Lauer as Luke Skywalker, Natalie Morales as Queen Padma Amidala, Hoda Kotb as Yoda, Meredith Vieira as Princess Leia, Kathy Lee Gifford as C3PO and Al Roker as Han Solo.

It's official! The former American Idol contender is going to be a regular performer in the US leg of Britney Spears' Circus. Jordin Sparks announced the news in her web site Friday last week. This is a big break for the 19-year-old. Way to go!