It was a selfie Sunday for Kourtney Kardashian, the eldest sister on the famous Kardashian-Jenner clan. The mother of 3 Kourtney ditched her clothes as she lounged poolside at her Calabasas mansion.

HOT Mama! Kourtney Kardashian flaunts her butt in revealing bikini -SEE PIC

The 36-year-old reality star donned a skimpy bikini as she showed off her curvy posterior in a very racy Instagram snapshot.

The ‘Keeping Up With the Kardashians’ star donned a leopard print bikini as she flaunted her feminine curves.

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She was seen enjoying some fun in the sun and posted another pic with a caption Selfie SUNday,' alongside a gal pal lounging poolside.