"This hospital is really important to me," she said in a statement. "I've actually had friends that have had their babies here, and I've spent weeks on end with them visiting them."
"My family and I always love to come here, and throughout the year try to pop in and put a smile on the kids' faces, or more importantly, the families that are struggling so hard to still work and take care of them and not wanting to leave their children by themselves," she continued. "So anything we can do and my family can do, we love being a part of this community and helping out. So I am here today just to help spread that word and hope everyone gets involved in the Make March Matter campaign."
The mother of two later took to Twitter to raise awareness for the campaign.
"Spent the morning at the Children's Hospital CHLA launching the campaign for Make March Matter. For more info go to http://MakeMarchMatter.org," she wrote.
While the Keeping Up With the Kardashians star spent time with former CHLA patients on Wednesday, she took to Instagram earlier in the week to share sweet pics with her own son, Saint. See more in the video below.