They might be one of the world's most famous power couples, but David and Victoria Beckham have relationship niggles just like the rest of us.The pair shared a hilarious insight to their bedroom routine, as former footballer David, 47, took to his Instagram stories to share a shirtless selfie as he lay in bed half-under the covers and frowned into the camera. His wife of 21 years Victoria, 48, could just be seen behind him as she read her book with a very bright book light attached to it which appeared to throw the rest of the room into spectacular clarity too.