Jesse McCartney and Adrienne Bailon team up for a day at UCLA Mattel Children’s Hospital in Los Angeles on Saturday afternoon (December 8).

Working with the Ryan Nece Foundation, the duo, along with Julissa Bermudez and Alex Jacke, met with patients at the facility where they made arts and crafts, tree decorating, and made ornaments.

Jesse, Adrienne and Julissa also stopped by patient’s rooms who weren’t able to make it out to the common room. They delivered Christmas trees and a gift.

“Today at The Mattel Children’s Hospital. Everyone needs a little Christmas!” Jesse wrote.

Adrienne added, “Tis’ the season… So happy to join The Ryan Nece Foundation to hand out Christmas gifts at UCLA Children’s Hospital!”

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Jesse McCartney hits up the stage for a performance at the Carole King Music Celebration held at the Dolby Theatre on Tuesday night (December 4) in Hollywood.

The 25-year-old musician joined Katy Perry at the celebration, which benefited Paul Newman‘s The Painted Turtle Camp.

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The Painted Turtle offers thousands of children with serious medical conditions hope and encouragement through its Summer and Family Weekend camps since opening in 2004.

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Jesse McCartney takes a break from the recording studio for a little guy time at the Grove in Los Angeles on Sunday afternoon (September 9).

The 25-year-old singer/songwriter has been in the studio tons lately and just put up a new song for his fans!

“New song of mine for you guys to approve!!” Jesse tweeted.

WHAT DO YOU THINK?

Jesse has also been in the studio with Hot Chelle Rae. “Me and @NashOverstreet writing their next Big Single! Watch out kids,” he wrote along with a pic of the two goofing around.

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Jesse McCartney fans gets excited!

The 25-year-old entertainer recently dished about some exciting projects he’s been working on.

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“I’m the process of finishing, actually, some new music that I’ll be releasing probably later this year,” Jesse told Entertainment Tonight.

The heartthrob also mentioned a movie that he recently wrapped, saying, “I just got back from New York. I just finished a project with Catherine and Martin Scorsese,” he spilled about his upcoming film, Campus Life. “A lot of exciting stuff, though, to come.”

Everyone loves to lip-sync, even Jesse McCartney!

The 25-year-old musician showed off his funny side and decided to rock out to Demi Lovato‘s hit “Give Your Heart A Break.”

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“A Duet With Demi!” Jesse tweeted.

In the video, Jesse and a buddy go all out while performing their own lip-synced version of the song, which included some dance moves.

WOULD YOU LIKE Jesse McCartney and Demi Lovato to collaborate?

Jesse McCartney shows off his gorgeous smile while enjoying a night out with friends on Monday (May 28) in Hollywood.

The 25-year old actor and musician hit up the Pink Taco for a little Mexican food before heading home.

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Last week, the heartthrob revealed some exciting news via Twitter saying, “I ABSOLUTELY will have a new album coming out. Hopefully sometime this year. I’m constantly in the studio writing.”

Jesse also announced that he’d love to record a duet with American Idol runner-up Jessica Sanchez.

ARE YOU HAPPY Jesse is working on a new album?

Jesse McCartney has a huge smile on his face as he arrives at the premiere of his new flick, Chernobyl Diaries, held at Cinerama Dome on Wednesday night (May 23) in Hollywood.

The 25-year-old actor hosted a fan Q&A session on his Twitter before the screening.

“One of my favorite moments in the filming process was getting a chance to spend some time in Budapest, Hungary. Amazing Place!!!” Jesse tweeted about working on the thrilling movie.

He added, “It was more fun than anything, but it had its scary moments for everyone in the cast as we were all in an unfamiliar place!!”

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