09/16/2013 at 09:30 AM EDT
They got it from their momma!
showed off where the Kardashian and Jenner girls get their fit physiques from on Sunday when the momager-turned-talk show host
shared a bikini photo on Instagram
In the snapshot, Jenner, 57, is wearing a blue triangle-top bikini and statement necklace as she stands in the clear waters of a pool.
"Last day of summer gonna miss you," Jenner wrote.
Jenner isn't the only one getting social with her svelte figure – Kendall Jenner has also been sharing bikini photos
of her own lately. The young model, 17, recently posed for Agua Bendita Colombian swimwear brand.
Meanwhile, older sister Kim Kardashian
has opted for a more relaxed look – the mom to North West was photographed stepping out in Beverly Hills
in stylish dark, rolled-up pants and a gold-belted, low-cut white top.