Jimmy Kimmel brings 5-month-old son Billy to L.A. fundraiser event -- see the adorable family pics!

Jimmy Kimmel's adorable baby boy Billy looked happy and content on Saturday when the whole family turned out for the 8th Annual L.A. Loves Alex's Lemonade event at UCLA's Royce Quad.

The TV host and his wife, Molly McNearney, brought their 5-month-old son and their 3-year-old daughter, Jane, to the charity benefit for one of Billy's first public outings.

Kimmel, 49, held his sleeping infant son in his arms and out of the sun as he, his wife and his daughter smiled for photos outside the event, which benefitted the Alex's Lemonade Stand Foundation for Childhood Cancer.

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The Jimmy Kimmel Live star also shared an update about his little boy's health, telling Us Weekly, "Billy is doing well… He's got to have another operation soon, but he’s doing well."

15 PHOTOS
Jimmy Kimmel with his newborn son and family
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Jimmy Kimmel with his newborn son and family
LOS ANGELES, CA - SEPTEMBER 09: Jimmy Kimmel, Molly McNearney, Jane Kimmel and William Kimmel attend the 8th Annual L.A. Loves Alex's Lemonade at UCLA Royce Quad on September 9, 2017 in Los Angeles, California. (Photo by Vivien Killilea/Getty Images for L.A. Love's Alex's Lemonade)
Billy is helping me write tonight's monologue. I'll give our thoughts on the #GrahamCassidy health "care" bill. #BillCassidy @LindseyGrahamSC
LOS ANGELES, CA - SEPTEMBER 09: Jimmy Kimmel, Molly McNearney and Jane Kimmel attend the 8th Annual L.A. Loves Alex's Lemonade at UCLA Royce Quad on September 9, 2017 in Los Angeles, California. (Photo by Vivien Killilea/Getty Images for L.A. Love's Alex's Lemonade)
LOS ANGELES, CA - SEPTEMBER 09: Jane Kimmel, Jimmy Kimmel, Billy Harris and guests attend the 8th Annual L.A. Loves Alex's Lemonade at UCLA Royce Quad on September 9, 2017 in Los Angeles, California. (Photo by Vivien Killilea/Getty Images for L.A. Love's Alex's Lemonade)
LOS ANGELES, CA - SEPTEMBER 17: TV personality Jimmy Kimmel (L) and writer Molly McNearney walk the red carpet during the 69th Annual Primetime Emmy Awards at Microsoft Theater on September 17, 2017 in Los Angeles, California. (Photo by Rich Polk/Getty Images for IMDb)
LOS ANGELES, CA - AUGUST 16: Talk Show Host Jimmy Kimmel and Molly McNearney are seen on August 16, 2017 in Los Angeles, CA. (Photo by Hollywood To You/Star Max/GC Images)
Jane's first movie in a theater - The Boss Baby - made it all the way and, while the credits rolled, she shouted "let's watch it again!" Two little thumbs up
BEVERLY HILLS, CA - FEBRUARY 26: TV Personality Jimmy Kimmel (L) and wife Molly McNearney attend the 2017 Vanity Fair Oscar Party hosted by Graydon Carter at Wallis Annenberg Center for the Performing Arts on February 26, 2017 in Beverly Hills, California. (Photo by C Flanigan/Getty Images)
BEVERLY HILLS, CA - FEBRUARY 26: TV personality Jimmy Kimmel and Molly McNearney arrive at the 2017 Vanity Fair Oscar Party Hosted By Graydon Carter at Wallis Annenberg Center for the Performing Arts on February 26, 2017 in Beverly Hills, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
WESTWOOD, CA - DECEMBER 07: TV personality Jimmy Kimmel and screenwriter Molly McNearney arrive at the Los Angeles Premiere of 'Office Christmas Party' at Regency Village Theatre on December 7, 2016 in Westwood, California. (Photo by Axelle/Bauer-Griffin/FilmMagic)
LOS ANGELES, CA - SEPTEMBER 10: Tv host Jimmy Kimmel, wife Molly McNearney, and daughter Jane Kimmel attend the 7th annual L.A. Loves Alex's Lemonade at UCLA on September 10, 2016 in Los Angeles, California. (Photo by Rachel Murray/Getty Images for Alex's Lemonade)
LOS ANGELES, CA - SEPTEMBER 09: Jimmy Kimmel attends the 8th Annual L.A. Loves Alex's Lemonade at UCLA Royce Quad on September 9, 2017 in Los Angeles, California. (Photo by Earl Gibson III/WireImage)
LOS ANGELES, CA - SEPTEMBER 09: Jimmy Kimmel attends the 8th Annual L.A. Loves Alex's Lemonade at UCLA Royce Quad on September 9, 2017 in Los Angeles, California. (Photo by Vivien Killilea/Getty Images for L.A. Love's Alex's Lemonade)
LOS ANGELES, CA - SEPTEMBER 09: Late Night TV Host Jimmy Kimmel arrives for the 8th Annual L.A. Loves Alex's Lemonade at UCLA Royce Quad on September 9, 2017 in Los Angeles, California. (Photo by Greg Doherty/Getty Images)
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Kimmel went on to say that Billy "seems to be strong," explaining, "He pulls hair, that's for sure!"

Back in May, Kimmel got very emotional during his Live opening monologue when he revealed that his son had to undergo open heart surgery just hours after he was born.

"Six days after open heart surgery, we got to bring him home, which was amazing," a tearful Kimmel said at the time, revealing that Billy will have to have to undergo two more procedures on his heart in the coming years.

ET caught up with Kimmel and his adorable daughter at the Fifth Annual Ping Pong 4 Purpose Celebrity Tournament at Dodger Stadium in July, where he shared his appreciation for those who supported his family during that difficult time.

"We're very grateful for everyone's kindness," Kimmel said. "He's doing really great and we're all very happy about that."

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