Paige Spiranac rival Katie Sigmond shows off her bum in skintight shorts and sports bra after workout

Katie Sigmond felt the burn and showed off her bum after a sweaty workout. The social media sensation is fast approaching par with fellow golfer Paige Spiranac in terms of her huge Instagram following.

And the influencer again hinted at her rigorous regime in the gym as she posed for a rear-view selfie in lycra-style shorts and a sports bra. Katie produced a great twist and pout as she revealed her toned body. The American, 21, looked pink-faced after her exercise session.

But that’s nothing compared to her colorful look in an array of daring snaps posted online in bright red and blue outfits, as well as tiny bikinis. She chose a tiny scarlet one-piece for Halloween and a sweeping crimson dress for glamorous side-on shots, then switched to a gown of ocean blue for luxurious images while on holiday aside the Italian coast. Katie is now up to 3.2million Instagram followers, just 800,000 behind former professional golf player Paige.

And the many ways she’s revved up her battle to become the queen of swing on social media include cheeky pics on a dirtbike. She teased admirers with an invitation to “Hop on!” as she prepared to roar off in the Californian desert.