Kourtney flashes her toned bum as she tops up her tan in very cheeky selfie

Kourtney show off her impressive derrière. Kourtney Kardashian proved she's more than a match for her younger sis as she flashed her bum in a cheeky selfi. Mum-of-three Kourtney grabbed a quick snap of her pert bottom as she sunbathed in a leopard print bikini.

The reality star flaunted her impressive curves including a serious amount of side-boob as she lounged around the pool.

She wrote: "Selfie camera crew."

Another snap showed Kourtney, 36, getting snap-happy as she lay beside a friend and soaked up the rays.

"Selfie SUNday," she captioned the picture.