Veteran pop star Sir Cliff Richard is finally calling time on his famous sexy photoshoots at the age of 73. The wrinkly rocker peels off or dons figure-hugging T-shirts annually for his calendar shots and continues to impress with his ripped physique well into old age. However, the Living Doll hitmaker has now posed for his last racy photoshoot as he insists keeping fit is too much pressure as the years go by. He tells U.K. talk show host Graham Norton, "I am not going to do any more. How many shapes can I pull with this body? It's a pressure."