Kourtney Kardashian showed her new fitness regime is paying off when she flaunted her toned body on Twitter.

The reality TV star, 38, posted a picture of herself looking sleek in a skimpy black bikini, hat and shades, which she captioned: “Sun vibes.”

The mum-of-three – who welcomed her youngest child, son Reign, in December 2014 – has been working out almost every day to get herself ready for the beach season.

Kourtney has shared several snaps from her workouts, many showing her exercising with her sisters Khloe and Kim, with her fans.