Kourtney, 39, and Sofia, 20, left the clinic one after another.
Both women dressed casually for the spa outing. Kourtney wore black leggings and a white hoodie while Sofia donned light wash jeans and snakeskin booties with a black t-shirt.
The two ladies have been hanging out quite a bit over the past couple of months. Sofia joined boyfriend Scott, 35, and Kourtney for a lunch in Santa Barbara last month.
A source revealed to OK! Magazine that Kourtney would be "happy to put in her two cents" if Scott ever takes the next step and proposes to Sofia. She would even be open to designing the model's engagement ring.
Do you think Kourtney would truly support Scott proposing to Sofia? Sound off in the comments!