Kourtney Kardashian and Daughter Penelope Have the Cutest Friday Night Pajama Party

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Friday night was girls night for Kourtney Kardashian and daughter Penelope!

The 37-year-old reality show star took to Instagram after she spent the night laying low in bed with her 4-year-old, posting an adorable photo of the mother-daughter duo munching on Ruffles in their jammies (#MaltVinegar #CheddarAndSourCream). Because a photo is worth a thousand words, Kourtney simply captioned the snap "Friday night." 

WATCH: Kourtney Kardashian Gives Inside Look at Daughter Penelope's Super Cute Bedroom: Pics!

Before winding down with Penelope, Kourtney posed in her walk-in closet, where she hiked up her robe to show off her fuzzy, black boots… and a whole lot more. Her gams were on full display in the sexy IG pic. 

WATCH: Kourtney Kardashian Shares Sexy Booty 

Last month, Kourtney turned a rainy day into an opportunity for baking with Penelope and her niece, North West. Watch the video below to see the cuteness unfold.