'So my friends are anxious that we're going to run into people that they were mean to, ' she states, before adding 'I feel so good about my conscience, I was so nice to everyone'.
The KKW founder, 37, shared a series of clips on Snapchat documenting her appearance at her alma mater, Marymount High School, which she graduated from in 1998.
Talking to her fans, she confided, 'So my friends are anxious that we're going to run into people that they were mean to.
Friday morning, Kim tweeted that the baby is "so lovely", adding that Khloe is "so strong" and that she made childbirth "look... easy".
Walking around she explained, 'We are walking the same halls we walked 20 years ago'.
She begins by sharing that she rented a party bus for her and her Marymount alumni friends.
The Keeping up with the Kardashians star also made a tongue-in-cheek comment about whether or not she should wear a name tag.
"Of course, I had to get a party bus for the class of '98", the reality star said, panning to show the luxurious bus with three high school yearbooks sitting on the bench seats.
Kim Kardashian had lately been posting several pictures of herself in a bikini, on social media.
"This is so insane", Kardashian repeated as she and her friends enter the school.