Kylie Jenner had a reason to celebrate on Friday -- her best friend's birthday!
Jenner played photographer, taking fun Snapchat videos of her day out with friends.
The makeup mogul was careful not to show any signs of a growing baby bump in any of her snaps, as she wore a baggy black T-shirt and red sweatpants during the outing.
Jenner later gifted her bestie with a brand new Mercedes, which they took for a spin to grab some fresh coconut juice.
ET learned on Friday that Jenner is expecting her first child with rapper Travis Scott.
"Kylie always wanted to be a young mom," a source told ET of the Life of Kylie star. "She may be young, but she's very maternal and has lots of practice with babies! She's a very hands-on aunt and was basically a step-mom to Tyga's kid."
See more in the video below.