Kourtney Kardashian did her Pilates in skintight pink pajamas on Sunday morning, showing off her impressive strength and technique on Instagram.The reality star, 43 – who recently took a very racy picture with her husband Travis Barker, 47 – posted a brief snippet of her hanging from a trapeze.Sculpting her body in a pair of Valentine's-themed SKIMS, Kourtney gave her 211 million followers a glimpse into how she maintains her killer physique. Rise and shine: Kourtney Kardashian, 43, did her Pilates in skintight pink pajamas on Sunday morning, showing off her impressive strength and technique on InstagramThe Lemme founder's 10-year-old daughter Penelope recorded the video and could be heard in the background saying, 'Wait, I got the wrong angle.' But Kourtney didn't seem to mind as she swung from the bars and let her raven hair flow freely. The Poosh Founder is a major Pilates devotee, using her at-home studio on a daily basis to stay toned and fit.The equipment that Kourtney uses is called the Pilates Cadillac, which has become a must-have for celebrities like Kate Hudson and Miranda Kerr.