The 25-year-old Oscar winning actress remained low key in gray T-shirt during her visit, reported Aceshowbiz.
The hospital took to Facebook to share pictures of the "Hunger Games" star meeting her young fans.
"Jennifer Lawrence stopped by Kosair Children's Hospital today! Thank you for bringing many smiles to the patients before the holidays," read the caption of a photo album showing Lawrence's visit to the hospital.
The hospital also retweeted some photos from Twitter users, who managed to click the actress during her hospital.
