By Sarah Tetteh Kourtney Kardashian has paid tribute to her late father Robert Kardashian on what would have been celebrating his 80th birthday. The Keeping Up With The Kardashians star has shared a sweet story with fans on Instagram about the famous attorney. Robert died in September 2003, just two months after being diagnosed with oesophageal cancer. His eldest daughter Kourtney has made no secret of how close she was with him. Sharing an adorable throwback snap with her dad, she said: “We had a movie date every Wednesday night and he would show me an old movie each week.” READ MORE: Kourtne…