http://www.youtube.com/watch?v=5_HP4nV3K3c

Beyonce, Halle Berry, Salma Hayek, Blake Lively, Zoe Saldana, John Legend, Ariana Huffington & Olivia Wilde are just some of the celebrities who are joining forces for a new campaign called “Chime For Change,” a new, global campaign focused on girls’ and women’s empowerment.

It serves to convene, unite and strengthen voices speaking out for girls and women around the world, and to raise funds for non-profit organizations pursuing change.

The video is an effort to help raise awareness of the CHIME FOR CHANGE live concert event on June 1, 2013, at Twickenham Stadium in London, which will be broadcast globally to more than 1 billion people worldwide.

“Our goal is to call for change for girls and women in the loudest voice possible,” said Beyonce. “I am excited for us to come together on June 1st to bring the issues of Education, Health and Justice for girls and women to the world stage.”

© Al Powers/PowersImagery.com

From the Hamptons to Hollywood, where were the stars this week?

2012 Olympic Gold Medalist Ryan Lochte gave the ladies quite a show in a white Speedo at Maxim Fridays at TAO Beach, fresh off a night with friends at TAO nightclub. Joined by fellow gold medalist Cullen Jones, the group took in the sunshine from a VIP cabana before making their way to the pool to beat the heat!

Kate Beckinsale, Colin Farrell and Jessica Biel all rolled up to The Vue West End to show their English fans some love! The cast of “Total Recall” were all smiles at the film’s UK premiere in London this week and all looked ‘TOTALly’ hot!

Birthday boy Joe Jonas showed up at a CW shindig celebrating “The Next,” and his birthday in LA this week! “The Next” is a new talent show hosted by Allison Hagendorf that debuted this week! Happy 23rd Birthday, Jo-Bro!

A ton of Tinseltown hotties came out to support Breast Cancer Research this week at Live IN Pink Party! “Twilight Saga” star Nikki Reed was all smiles as she hung around with the rest at the Petit Ermitage Hotel, sporting a lovely pink dress, black leather jacket and black heels. Giuliana Rancic also made an appearance and posed for the paps alongside Reed!

Matthew McConaughey and Camila Alves hosted the NYLON Guys and Macy’s INC party in Santa Monica this week! The newlyweds celebrated the September Issue of the mag at the brand new Bungalow 8!

FOR MORE STAR SIGHTINGS THIS WEEK, KEEP READING…

Marion Curtis/Starpix

Michelle Williams was the center of attention as she arrived for a special screening of “Take This Waltz” in the Big Apple this week! Joined by co-star Luke Kirby, the two greeted fans and pleased the paparazzi at the Sunshine Landmark venue.

LL Cool J and special guest Grandmaster Flash launched the revolutionary online software package for musicians, Future Sounds My Connect Studio in NYC this week. This web-based application allows multiple artists and musicians to record, edit and produce new music together simultaneously in real-time from anywhere in the world. LL was on-hand to demo the new software and meet with hundreds of NYC fans.

With a great start to the weekend, Venus and Serena Williams were spotted at the Pre-Wimbledon Party in London this week! The tennis pro sisters both were dressed to impressed as they posed for the paparazzi outside The Roof Gardens upon their arrival!

Mark Wahlberg, Mila Kunis and Seth MacFarlane were in the spotlight at Grauman’s Chinese Theatre in Hollywood this week. With just over a week until “Ted” hits theatres, the co-stars were all smiles as the caught the debut screening of the comedy!

YUM! Ashley Benson was spotted at BOA Steakhouse in West Hollywood this week. Joined by a friend, the “Pretty Little Liars” star looked great in an all black ensemble!

We all know JB took over the Big Apple but Justin Bieber found some time to drop by Z-100 New York’s “The Elvis Duran Show” to talk about his new album “Believe” and even got a little cozy with my pal Carolina Bermudez!

FOR MORE STAR SIGHTINGS THIS WEEK, KEEP READING….

PHOTO: Jason Kempin/Getty Images North America via Zimbio

Ricky Martin looked like a million bucks at the opening night festivities for his “Evita” Broadway gig at the Marriott Marquis Hotel in New York City. Martin has been working hard and is ready to show off his stage skills!

Kid Cudi spotted on the mic hyping the crowd from the DJ booth at boutique Hollywood nightclub AGENCY Tuesday, as Fernando Garibay, official musical director for Lady Gaga during the making of album “Born This Way,” played an entrancing DJ set.

Mad Men’s Jon Hamm and John Slattery sawing into steaks at Ben Benson’s with NBC’s Brian Williams, Al Roker, Today Show Producer Jim Bell, PR Man Jon Harris and Andy Ostroy of the Adrienne Shelly Foundation. Ben Benson himself came out to greet the crew, who gathered for a charitable lunch to benefit the Foundation.

CMT star Melissa Rycroft kicked off her heels and slipped into some chic and comfy Crocs at The Palazzo Hotel in Las Vegas this weekend for some much needed R&R with her family – husband, Tye Strickland and daughter, Ava Grace. Ava Marie was spotted in Croc’s Keely shoes in a Navy/Pink Lemonade.

Jake and Maggie Gyllenhaal were spotted out and about in the big apple this week. The stud and his pregnant sister walked through Chinatown while the paparazzi captured some good shots! Nothing like some sibling bonding!

Kim Kardashian goes west…no pun intended. The reality star was spotted at JFK airport catching a flight out of NYC back to good ol’ LA! She looked cute and casual wearing a printed white top and a big smile as well!

FOR MORE STAR SIGHTINGS THIS WEEK, KEEP READING…

© 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…

It’s Summertime, so the beaches are heating up, and MJ‘s favorite stars are bearing their bikini bods for the pages of the magazines. But so many people want to know how they, too, can look like the stars… Well, who better to ask than trainer-to-the-stars Harley Pasternak (trainer to stars like Lady Gaga, Jennifer Hudson, Halle Berry, and Alicia Keys)?

MJ: What is the biggest misconception (or what are the biggest misconceptions) about how to lose weight the right way?

Harley: I think the biggest misconception that people have about losing weight the right way is that you have to spend three or four hours a day at the gym or that they have to starve yourself. The truth is, it’s not necessary. You can spend as little as 25 minutes a day at the gym and eat five times a day and still get fantastic results. The key to losing weight the right way, is not about maximizing the amount of exercise that you do, but optimizing it. It’s not about starving yourself, but eating the right foods and the right amount. When you starve yourself, you’re actually slowing down your metabolism and setting yourself up for future weight gain. So don’t starve yourself, don’t spend hours a day at the gym and whatever you do, ask yourself, ‘can I keep this up for the rest of my life?’ If the answer is no, don’t start.

MJ: You train Lady Gaga (among many other stars) and I have always been impressed with her endurance while on stage. She’s singing like crazy while dancing like a maniac. What’s the key to having good endurance? How does one “build up” their endurance?

Harley: Endurance isn’t about maximizing your intensity or increasing the amount you can lift. You need to gradually build up your endurance and work on increasing the length of time you do an exercise at a certain intensity. So don’t get discouraged if your endurance isn’t at the level as Lady Gaga…yet! Just keep training and keep a positive attitude.

MJ: Jennifer Hudson looks incredible but she couldn’t have lost all the weight on just Weight Watchers alone. She had to do some serious training in the gym. How many hours would you estimate J-Hud spends working out nowadays to maintain her bod? What kinds of exercises did you do with J-Hud to slim down her figure?

Harley: Many people overestimate the amount of time celebs train at the gym. Often times, many celebrities are just as busy as anyone else. Jennifer Hudson is an incredible woman and a great client. To get Jennifer in the shape that she’s in now, she gradually increased the amount of cardio that she did on a daily basis. We got her taking walks with her baby and we slowly added in resistance training. She started doing these 25 minute 5 factor workouts daily and adding that in along with her nutrition program. And she went from doing one a day once a week resistant workouts to two, three, four, five times a week and now exercise is just a part of her everyday life.

In one pic: Oprah Winfrey, Tom Hanks, Diane Sawyer, Queen Latifah, Patti LaBelle, Beyonce, Madonna, Dakota Fanning, Halle Berry, Katie Holmes and Tom Cruise.

Oprah knows how to bow out… and she does it bigger than big! (and those were only some of the names at her big taping in Chicago!)