Celebrating their all new web platform and magazine, Billboard hosted a concert in NYC that was fit for the stars!

Kicking off the night at Stage 48 was YouTube sensation Timeflies who took to the stage to perform some of their most famous covers, followed by a performance by an electric performance by Neon Trees. Just before 11 PM, E! News host Alicia Quarles introduced Grammy Award-winning rapper Ludacris who took to the stage and performed a handfull of his hottest hits including “Roll Out,” “Move Bitch,” “Yeah!” and more, while the packed crowd rocked with him.

Check out more HOT SHOTS and a clip from Ludacris Billboard Party performance…after the jump!

This week I caught up with the entire cast of “The Jersey Shore,” MTV’s highest-rated television series of all time.

Nicole “Snooki” Polizzi, Jenni “JWOWW” Farley, DJ Pauly D, Vinny Guadagnino, Sammi “Sweetheart” Giancola, Ronnie Ortiz-Magro, Mike “The Situation” Sorrentino and Deena Nicole Cortese chat with AXSLive about everything from saying goodbye to “The Shore” to Halloween costumes and plans to what they are up to next.

Amanda Schwab/Starpix

Hollywood hotties Olivia Wilde and Emma Stone sandwich funnyguy Jimmy Fallon on the red carpet at the 15th Annual EIF REVLON Run/Walk for Women this week in the Big Apple! The two actresses were all smiles in their workout gear and seemed to be enjoying the NYC afternoon.

Host of BET’s “106 & Park,” Rocsi Diaz, was joined by celebrity pals Adrienne Bailon & Julissa Bermudez on the blue carpet at the 5 year anniversary celebration of MicahJesse.com, presented by NIVEA, at Canoe Studios. The TV personalities were joined by other famous faces in the media including Carrie Keagan, Phillip Bloch, Drita D’Avanzo (“Mob Wives”), Jonathan Cheban, and many many more!

After attending the LA Lakers v Denver Nuggets game at STAPLES Center this week, Kenny Hamilton cruised into boutique Hollywood nightclub AGENCY around 9:30 PM to celebrate his birthday amongst celebutantes and close friends with a special guest DJ set by Chris Lake. Spotted celebrating alongside Kenny were Rob Kardashian, Vinny Guadagnino, Brody Jenner, Zac Efron, and Ryan Cabrera.

Red hot former “Desperate Housewives” star Marcia Cross was spotted getting a Pink Smoothie gel manicure at Bellacures in Santa Monica this week.

The stars stepped out this week as they enjoyed a night of music with family and friends by attending the Coldplay concert. The lovely Ashley Tisdale was spotted entering The Hollywood Bowl venue with her parents while Gwen Stefani made her arrival in a bright pink jacket! Cameron Diaz was also in attendance.

Country cutie Taylor Swift was spotted leaving Neil Lane Jewelry store in LA this week. The beautiful songstress rocked pretty gold flats as she walked out of the store sporting some new bling.

KEEP READING FOR MORE STAR SIGHTINGS THIS WEEK!

John Stamos kisses for a cause at the 2012 GLAAD Media Awards

It just doesn’t get too much better than this!!!!

At last night’s GLAAD Media Awards in NYC, “Glee” stars Cory Monteith and Naya Rivera auctioned off “sweet” kisses with each of them — for some seriously big bucks!

Well, the spotlight shifted a bit (okay, a lot…) when another big name in the room unexpectedly decided to jump in and help raise the stakes to support GLAAD’s work…

Actor John Stamos, affectionately known by many as Uncle Jesse from “Full House,” perked up to join the “kiss off” — at the tune of $5,000 to help to rake in a whopping $15,000 (between the three of them).

Talk about taking one for the team!

Other celebrities in attendance at the annual awards show included Dakota Fanning, Padma Lakshmi, Wendy Williams, LaLa Anthony, “Jersey Shore” star Vinny Guadagnino, and many many more!

Watch the VIDEO of what went down…after the jump!

On last night’s episode of MTV’s “The Jersey Shore,” you saw Vinny Guadagnino leave the house due to his inability to cope with his anxiety, something he has been dealing with since he was a teenager.

The reality star attributes the drinking, loudness, hard-partying, and constant fighting as some of the triggers for his anxiety in the house.

Vinny joined The Jed Foundation (a national nonprofit organization working to protect the emotional health of teenagers) and MTV’s Half of Us program to talk about how he has dealt with his issues and to hopefully help people out there dealing with the same issues.

Good for you, Vinny!

Watch the clip below:

© RD / Orchon / Retna Digital

Boyz II Men were honored with a coveted star on the Hollywood Walk of Fame in Los Angeles. Also there to support was mega music singer-producer Kenny ‘Baby Face’ Edmonds, who said a few touching words about the guys.

Real Housewives of Beverly Hills’ Kyle Richards promoting her new book Life is Not a Reality Show, while husband Mauricio stayed close by but in the background as Kyle soaked up the spotlight at new rock and roll club RokkCity in NYC yesterday.

Kid Cudi hanging out in a corner booth with the company of a blonde female friend and near DJ Travis Emmons, who spun sounds that kept the crowd partying all night at exclusive boutique nightclub, Agency, in LA on Tuesday night.

“Haywire” held its Los Angeles premiere this week. The DGA Theatre was packed with familiar faces with stars like Ewan McGregor, Channing Tatum (with Jenna Dewan), Dominic Monaghan, and Gina Carano giving the fans and press an eventful evening!

Getting back into the swing of things after the holiday season, Halle Berry was spotted walking her daughter Nahla to school in West Hollywood this week. Berry, beautiful as always, was dressed casual in a light grey t-shirt, dark grey scarf!

Kim and Khloe Kardashian were spotted at the American Airlines Center in Dallas, Texas last night to support Lamar Odom and the Dallas Mavericks take on the Phoenix Suns! The sisters also hit up Stanley Korshak’s shop, where they purchased a few pairs of furry boots and trendy handbags to match before the game!

KEEP READING FOR MORE STAR SIGHTINGS THIS WEEK…

© RD / Kabik / Retna Digital

Celebrities hosted parties from New York to LA and we have your roundup of the hottest parties from the hottest stars!

Fergie attended the New Year’s Eve party at The Mirage’s 1 OAK, planting a kiss on husband Josh Duhamel at midnight. Her Black Eyed Peas bandmate, Will.i.am., was at the Strip nightclub Surrender at the Encore at Wynn Las Vegas!

“Jersey Shore” star Vinny Guadagnino hosted Joonbug.com Beat the Beats New Year’s Eve party at the AMC 34th Street movie theater in NYC, where the website transformed the movie theater into a club for one night only!

Lady Gaga was the special guest of Mayor Michael Bloomberg and did the honors of dropping the ball in Times Square. Gaga’s performance as part of Dick Clark’s Rockin’ New Year’s Eve, which also featured Ryan Seacrest and Jenny McCarthy, will be broadcast both in the United States and in Japan. Other celebs performing in Times Square as part of MTV’s New Year’s Eve special included Demi Lovato, Selena Gomez and Jason Derulo.

DJ-to-the-stars DJ Cassidy manned the 1′s and 2′s at Diddy‘s private house party in Miami Beach.

Robin Thicke shared his sultry musical stylings at a performance at the Delano Hotel in the MIA. His wife, Paula Patton, was also there for a kiss at midnight!

John Legend rang in the new year in style with a performance of his smooth, R&B sound at the Pearl at the Palms Casino Resort!

KEEP READING FOR MORE NEW YEARS EVE 2012 STAR SIGHTINGS…