“Kate & Allie” actress Susan Saint James made a rare appearance to celebrate her 80th birthday. The sitcom star threw a birthday party at her home in Los Angeles on Aug. 14, as seen in photos obtained by Page Six. James wore a white “Spiritual Gangster” T-shirt and a floral skirt as she walked around the outside of her house, a paper cup in hand. She completed her look with a red bandana on her head, brown sunglasses and white sneakers. James’ ankle tattoo was visible in the pictures. Some of her family and friends were also photographed at the gathering, including three women wearing bright summer dresses. James rose to fame starring in…