Published: 14:17 EST, 24 December 2017 | Updated: 14:17 EST, 24 December 2017
It's clear that Khloe Kardashian was paying attention when it came to her sisters pregnancies.
And having seen big sister Kim struggle to lose the baby weight she gained while expecting her two children, the 33-year-old is not slacking on her workouts.
On Christmas Eve the mother-to-be, who finally confirmed her pregnancy this week, hit the gym for a pre-holiday session.
Koko's pregnancy workout! Khloe Kardashian hits the gym to do squats after confirming she's expecting
Hard at it: Squatting, she wore stretchy exercise bands attached to her feet to increase the intensity of the workout
Squatting, she wore stretchy exercise bands attached to her feet to increase the intensity of the workout. She then tackled weights to keep her arms in shape.
Khloe is quite the gym bunny, having transformed her body with the help of a personal trainer over the past few years.
In her snapchat videos, which she labelled Merry Christmas, the mother-to-be wore black workout clothes and had a shirt tied around her waist. Her hair is tied off her face in a practical style.
Working out: In her snapchat videos, which she labelled Merry Christmas, the mother-to-be wore black workout clothes and had a shirt tied around her waist
As she worked out fans got just a glimpse of her bump, in a side view shot.
Khloe finally confirmed her pregnancy with boyfriend Tristan Thompson on Wednesday, after months of speculation.
The reality star shared a photograph of her burgeoning bump, with Tristan's hands wrapped around her stomach, to Instagram.
Baby face: Khloe played around with the filters as she Snapchatted
She wrote: 'My greatest dream realized! We are having a baby! I had been waiting and wondering but God had a plan all along. He knew what He was doing.
'I simply had to trust in Him and be patient. I still at times can't believe that our love created life! Tristan, thank you for loving me the way that you do!
'Thank you for treating me like a Queen! Thank you for making me feel beautiful at all stages!'