Kellan Lutz
The Twilight star appears with the Easter Bunny at the Los Angeles Mission before the holiday.
Pharrell Williams
The singer serves food at the Los Angeles Mission before Easter.
Peggy Sulahian
The Real Housewives of Orange County star delivers gifts from Giovanna Wheels' annual toy drive at CHOC Children's Hospital.
Ciara and Kelly Rowland
Before Christmas 2017, the two singers surprised patients and their families at Seattle Children's Hospital.
Emmy Rossum
The Shameless actress donates her time to help serve food to the needy at the L.A. Mission the day before Thanksgiving.
Pharrell Williams
The Voice coach is seen at the annual Los Angeles Mission Christmas Dinner on Christmas Eve.
Kristen Taekman
Blossom Blast Saga and the Real Housewives of New York City star bring holiday cheer and fresh flowers to the senior citizens at the Encore Community Services Center.
Emmy Rossum
The Shameless actress volunteers at the annual Los Angeles Mission Christmas Dinner on Christmas Eve.
Ellie Kemper
The Kimmy Schmidt star keeps her Unbreakable streak going by lending a hand at Feeding America's Hope for the Holidays at NYC's Bowery Mission.
Russell Westbrook
The NBA star plays Santa for more than 60 homeless children at the 4th Annual Russell Westbrook Why Not? Foundation Holiday Party in partnership with JMA Energy Company and City Rescue Mission.
Rachel McAdams
The actress and her snowman friend are all smiles at the 31st Anniversary of CIBC Miracle Day in Toronto to raise money for children in need.
Scarlett Johansson
Jingle, jingle! The actress and Barry Manilow team up with (RED) to sing a holiday song for World AIDS Day.
Scott Eastwood
Can I buy you a drink? The actor gets behind the bar at West Hollywood's Rock and Reilly's Irish pub for a fundraiser benefiting the Charlotte and Gwenyth Gray Foundation.
Michelle Obama
The First Lady meets with deserving families during a Marine Corps Toys for Tots event at Bolling Air Force Base in Washington.
Tori Spelling
The reality star receives FabFitFun's VIP winter box hand-delivered by sexy santas and ASPCA rescues to kick off FabFitFun's holiday partnership with the ASPCA.
Elizabeth Banks
The Mockingjay star visits troops at Bagram Air Field, Afghanistan.
Kellan Lutz
"I am so honored to team up with @BasalmHill and @OperationSmile for their #CelebritiesforSmiles campaign! This ornament will be auctioned off with 100% of the funds being donated to provide life changing surgery to children around the world!" the Twilight actor wrote on Instagram with a link to the auction.
Brooke Burke-Charvet
The actress shows her support for Operation Smile while holding an autographed Balsam Hill ornament that will be used for charity.
Ciara
The singer takes part in the 2015 Share a Meal program at NYC's Institute of Culinary Education.
LL Cool J
The rapper-actor gives out care packages at Worldstar Foundation's 2nd Annual Skid Row Christmas Giveaway at Rotary House Homeless Shelter in Los Angeles.
Julie Bowen
The Modern Family star makes decorations with the kids while hosting an event celebrating Tiny Print's line of holiday cards benefiting Baby2Baby, which provides all sorts of baby necessities for moms and families in need.
Power Rangers
Real heroes! The Power Rangers Super Megaforce and New York Common Pantry distribute Thanksgiving turkeys and fixings to underserved families.
Tyga & Kylie Jenner
The close pals dish up sides during the annual Thanksgiving meal served by the Los Angeles Mission and Anne Douglas Center for Women.
Heidi Klum
The America's Got Talent judge hosts a holiday party at Children's Hospital Los Angeles. Klum gifted patients with iPad minis loaded with FiftyThree's Pencil and Paper app as well as Truly Scrumptious by Babies 'R' Us pajamas.