Peter Andre took to Instagram on Monday to pay a heartfelt tribute to his sister Debbie in honour of a special occasion – her birthday!The singer and producer shared a series of photos to the social media site in honour of the occasion, and fans were quick to spot the pair's shared genes.MORE: Peter Andre discusses baby plans with wife Emily MacDonaghThe first picture was a gorgeous close-up of Debbie smiling at the camera, and she looked so much like Peter and his children, it was no wonder one