'Smiling' Kourtney K flaunts hot-bod in white bikini

Kourtney Kardashian just gave her fans a good Friday treat when she posted an undie picture of herself on social media.

The 36-year-old TV personality took to Instagram and posted a pic in which she is seen smiling and sitting in a wooden chair wearing nothing but a white bra and matching Calvin Klein high-waist underwear, reports E! Online.

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