Jaden Smith walks behind dad Will Smith as the two attend the Party 4 Peace Celebrity Weekend on Friday (July 20) in Philadelphia, Penn.

The 43-year-old actor and his 14-year-old son were joined onstage at the "I WILL Be Great Leaders" Awards & Luncheon Ceremony by Charlie Mack, Kendra G, and AJ Calloway.

PHOTOS: Check out the latest pics of Will Smith

The Party 4 Peace weekend benefits the AmeriHealth Mercy Foundation, whose goal is to help struggling communities flourish.

10+ pics inside of Will and Jaden Smith at the Party 4 Peace Celebrity Weekend…

Madonna keeps it classically chic in an all black ensemble as she arrives at her hotel on Friday (July 20) in London, England.

The night before, the 53-year-old entertainer put on a show in Birmingham, the latest stop on her MDNA tour.

PHOTOS: Check out the latest pics of Madonna

Earlier in the week, Madonna, her beau Brahim Zaibat, and her kids were spotted out and about in Paris! They all enjoyed a cruise down the Seine river.

10+ pictures inside of Madonna arriving at her London hotel…

Adam Levine shows off his tattoos as he and two of his Maroon 5 bandmates get ready to depart from LAX Airport on Thursday (July 19) in Los Angeles.

The 33-year-old musician and actor wore a Los Feliz baseball cap as he and his buddies made their way through the terminal.

PHOTOS: Check out the latest pics of Adam Levine

Adam recently tweeted some advice for foodies in the Los Angeles area – “Everyone should know that the best Mexican food in LA is always from the trucks,” he said. “Just a tip if you’re looking for good Mexican food in LA. I feel like I work for the food network right now.”

Keira Knightley and Mark Ruffalo lock lips on the set of their upcoming flick Can A Song Save Your Life? on Thursday (July 19) in New York City.

The 27-year-old actress and her 44-year-old co-star are joined in the flick by Maroon 5 frontman Adam Levine and Hailee Steinfeld.

PHOTOS: Check out the latest pics of Keira Knightley

The drama centers on a businessman who falls for a young singer-songwriter and will hit theaters next year.

10+ pictures inside of Keira Knightley and Mark Ruffalo on the set of Can A Song Save Your Life?…

Minka Kelly keeps it casual and comfortable as she and her dog Chewy head out to hit the park on Thursday (July 19) in Beverly Hills, Calif.

The 32-year-old actress and her sweet pet pooch played fetch with a ball and a mini frisbee, taking breaks to cool off in the shade and rehydrate.

PHOTOS: Check out the latest pics of Minka Kelly

Minka is gearing up to play Jackie Kennedy in a movie called The Butler, which chronicles one man’s behind-the-scenes perspective on the lives of eight presidents.

15+ pictures inside of Minka Kelly and Chewy playing at the park…

Anna Faris smiles and waves as she arrives at the Sofitel Hotel on Thursday (July 20) in Los Angeles.

The 35-year-old actress and mama-to-be, who met up with a friend after checking in, kept it chic in a black dress.

PHOTOS: Check out the latest pics of Anna Faris

The next day, Anna was spotted out strolling with a different friend and showing off her baby bump in a form-fitting turquoise dress in Pasadena.

15+ pics inside of Anna Faris arriving at a hotel and going for a stroll with a gal pal…

David Beckham shows off his incredible body as he and the L.A. Galaxy win over the Whitecaps on Wednesday (July 18) in Vancouver, Canada.

The 37-year-old English soccer star, who reportedly wanted to skip the match in order to head to London to prep for the upcoming Olympic games, scored the deciding goal against the home team late in the game.

PHOTOS: Check out the latest pics of David Beckham

Last week, David was spotted out taking a ride on his motorcycle, then grabbing a bite to eat with a buddy.

10+ pictures inside of David Beckham leading the Galaxy to victory over the Whitecaps…

Justin Bieber is all smiles as he steps out of his hotel for a surprise meet and greet on Friday (July 20) in Auckland, New Zealand.

The 18-year-old singing sensation is gearing up for his world Believe tour!

PHOTOS: Check out the latest pics of Justin Bieber

Justin also made an announcement – “So excited to reveal the cover for my new book #JustGettingStarted,” he tweeted. “Hope u like it, I can't wait 4 u 2 read it.” He also posted a picture of the cover!

WILL YOU READ Justin’s new book?

Sandra Bullock and her co-star Melissa McCarthy film a scene for their upcoming buddy cop comedy The Heat on Thursday (July 19) in Boston, Mass.

The film is about an FBI agent (Bullock) who teams up with a Boston police officer (McCarthy) to take down a Russian mobster.

Melissa just received her second consecutive Emmy nomination for Outstanding Lead Actress in a Comedy Series for her work on Mike & Molly. Last year, she won the award!

She is up against Zooey Deschanel (New Girl), Lena Dunham (Girls), Edie Falco (Nurse Jackie), Tina Fey (30 Rock), Amy Poehler (Parks and Recreation), and Julia Louis-Dreyfus (Veep).

25+ pictures inside of Sandra Bullock and Melissa McCarthy filming The Heat…

Kate Bosworth shares a laugh with a photographer while loading up groceries into her car on Friday (July 20) in Los Feliz, Calif.

The 29-year-old actress picked up some items at Gelson’s Market in the afternoon.

PHOTOS: Check out the latest pics of Kate Bosworth

The role that Kate was attached to in the upcoming movie The Lifeguard will now be played by Kristen Bell, according to Deadline.

The film is about “a reporter on the verge of 30 who abandons her life in New York City, returns home to get her high school job as a lifeguard, and starts a dangerous relationship with a 16-year-old delinquent.”

15+ pictures inside of Kate Bosworth getting groceries…

Jennifer Lopez made it absolutely official that her American Idol days are over during her first U.S. tour stop on Friday (July 20) at the Prudential Center in Newark, N.J.

“I want to thank all of you for all your support and your love during my time on Idol,” the 42-year-old entertainer told the crowd. “It was an amazing experience for me and I am going to miss it very, very much. But at the end of the day, this is what I do. This is where I belong. Right here with all of you. Thank you!”

Jennifer‘s beau Casper Smart was spotted in the audience taking notes at a table in the center of the floor section.

Make sure to check out Jennifer on tour with Enrique Iglesias when she comes to your city!

15+ pictures inside of Jennifer Lopez performing during a previous tour stop…

Emily VanCamp and Joshua Bowman have a fun night out at the Playhouse club on Thursday evening (July 19) in Los Angeles.

The 26-year-old actress and her 24-year-old boyfriend just received word of a new character addition to their television show Revenge!

Jennifer Jason Leigh has signed on to play Emily Thorne’s super mysterious mother in the second season of the hit series, according to EW.

The role is set to be a recurring character throughout this upcoming season. We can’t wait to see what happens!!

Kristen Stewart gets her swing on as she and a gal pal step out for a few holes at a golf club on Friday (July 20) in Malibu, Calif.

The 22-year-old actress kept it super casual and opted not to wear traditional golf shoes, choosing instead her Vibram FiveFingers shoes.

PHOTOS: Check out the latest pics of Kristen Stewart

Kristen revealed some interesting details about her upcoming flick, The Twilight Saga: Breaking Dawn – Part 2, last weekend at 2012 Comic-Con!

15+ pics inside of Kristen Stewart golfing with a friend in Malibu…

Jennifer Hudson, Megan Hilty, and Debra Messing get to work on the second season of Smash on Thursday (July 19) in New York City’s Gramercy Park.

The second season of the NBC musical drama is expected to air mid-season. Jennifer will be guest-starring on multiple episodes!

Smash just received four Emmy nominations! They are nominated for Outstanding Guest Actress in a Drama Series (Uma Thurman), Outstanding Choreography (Routines: “National Pastime”/”Let’s Be Bad”/”Never Met A Wolf”), Outstanding Music Composition for a Series [Original Dramatic Score], and Outstanding Original Music & Lyrics (“Let Me Be Your Star”).

Amanda Seyfried heads to the Fed Ex store with a male pal on Thursday (July 19) in Los Angeles.

The 26-year-old actress and her companion came from dropping off her dog Finn at doggy day care! Cute!

PHOTOS: Check out the latest pics of Amanda Seyfried

The night before, Amanda was spotted out at the Chateau Marmont grabbing dinner with a pal.

Amanda also recently took her two pet pooches to a cafe to meet a pal for coffee.

25+ pictures inside of Amanda Seyfried running some errands with a male pal in Los Angeles…

Claire Danes debuts her tiny baby bump while hanging out on the set of Homeland on Thursday (July 19) in Charlotte, North Carolina.

The 33-year-old actress ate for two as she carried around a sandwich on location.

PHOTOS: Check out the latest pics of Claire Danes

That same day, Claire received an Emmy nomination for her work on the hit series!

“I am honored to be recognized by the Academy among such a talented group of women. I am thrilled that Damian [Lewis], Homeland, our amazing writers and director and so many others got nominated. It is a great day to be on set where we can all celebrate together,” Claire said in a statement about her nomination. Congrats, Claire!

Anna Paquin shows off her growing baby bump in a striped dress as she lands at Heathrow Airport on Thursday (July 19) in London, England.

The 29-year-old pregnant actress was accompanied by her hubby and True Blood co-star Stephen Moyer.

PHOTOS: Check out the latest pics of Anna Paquin

Last week, at the True Blood 2012 Comic-Con panel, Anna received a shout out from the audience. “Congratulations on the babies!” someone yelled, to which she replied, “Thank you!"

Anna and Stephen are set to welcome twins later this year.

Alessandra Ambrosio shows off her stripes while shopping with a buddy on Thursday (July 19) in Los Angeles.

The 31-year-old Brazilian model brought along her purple and pink dyed pooch, whose color seems to be fading away.

It was just announced that Alessandra will participate in the handover of the Olympic Flag from London to Rio de Janeiro, the host of the next Summer Olympics, during the closing ceremony this year!

Also pictured inside: Alessandra making her way through JFK Airport on Monday (June 16) in New York City.

20+ pictures inside of Alessandra Ambrosio shopping and at the airport…

Zoe Kazan, Deborah Ann Woll, and Toni Trucks hit the red carpet at the premiere of their film Ruby Sparks on Thursday (July 19) at the Egyptian Theatre in Hollywood.

The ladies were joined by their co-stars Paul Dano and Chris Messina.

Ruby Sparks, which hits limited theaters on July 25, is about a novelist (Dano) struggling with writer’s block who finds romance in a most unusual way: by creating a female character he thinks will love him, then willing her into existence.

FYI: Zoe is wearing Balenciaga by Nicolas Ghesquière. Deborah is wearing a Stella McCartney skirt, blouse and shoes with a Robert Procop ring and earrings. Toni is wearing a Rubin Singer dress, Charlotte Olympia shoes, Jessie Lane earrings, Sisco Bertulli bracelets, Lyra Lovestar ring, and a Daniel Espinosa clutch.

20+ pictures inside of the Ruby Sparks cast at the premiere…

Vanessa Hudgens and Austin Butler hold hands as they step out together to a movie theater to catch a showing of The Dark Knight Rises on Friday (July 20) in Sherman Oaks, Calif.

The 23-year-old actress and her 20-year-old beau tried to keep a low profile as they headed into the theater.

PHOTOS: Check out the latest pics of Vanessa Hudgens

The day before, Vanessa showed off her incredible physique as she left the gym.

10+ pictures inside of Vanessa Hudgens and Austin Butler stepping out to see The Dark Knight Rises…

Katie Holmes and her daughter Suri stick close together as the mommy-daughter duo takes a rainy stroll on Friday (July 20) in New York City.

The 33-year-old actress, who recently announced her imminent return to Broadway, and her 6-year-old little one kept dry under umbrellas.

PHOTOS: Check out the latest pics of Katie Holmes

The day before, Katie and Suri were reunited after Katie‘s estranged husband Tom Cruise spent a few days with their daughter. Tom and Suri went on a helicopter ride during their time together!

Rachel Bilson meets up with her beau Hayden Christensen to reportedly do some house hunting on Friday (July 20) in Brentwood, Calif.

The 30-year-old actress wore a bra exposing tank to search for new homes with her beau and their realtor.

PHOTOS: Check out the latest pics of Rachel Bilson

The day before, Rachel was spotted stocking up on some groceries at her local Whole Foods Market.

15+ pictures inside of Rachel Bilson meeting up with her beau Hayden Christensen for an afternoon of house hunting…

Ashlee Simpson strikes a pose at the Samsung Galaxy S III celebration on Thursday (July 19) in New York City.

The 27-year-old entertainer was joined at the event by Nick Millhiser and Alex Frankel of the band Holy Ghost!

PHOTOS: Check out the latest pics of Ashlee Simpson

“Having a blast in NYC with @SamsungMobileUS to celebrate the #GalaxySIII! Can’t wait to see @HolyGhostNYC dj!!” Ash tweeted at the event.

FYI: Ash is wearing alice + olivia by Stacey Bendet shorts and top with a Daniel Swarovski clutch.

Nicole Scherzinger looks gorgeous in a red dress as she leaves her hotel on Friday (July 20) in Liverpool, England.

The 34-year-old entertainer and The X Factor UK judge was headed to X Factor boot camp! Earlier this week, she rocked two other outfits for the boot camp judging.

PHOTOS: Check out the latest pics of Nicole Scherzinger

“Great week so far at XF boot camp here in Liverpool. Its tough but I’m so impressed with the talent here in the UK! Get some rest n let’s get to work tomm Xo” Nicole tweeted.

10+ pictures inside of Nicole Scherzinger rocking three different looks this past week for The X Factor UK boot camp judging…