Stallone has been married three times. At age 28, on December 28, 1974, he married Sasha Czack. They had two sons, Sage Moonblood Stallone (1976–2012), who died of heart disease at age 36, and Seargeoh (born 1979), who was diagnosed with autism at an early age. The couple divorced on February 14, 1985. Stallone married model and actress Brigitte Nielsen on December 15, 1985, in Beverly Hills, California. Their marriage (which lasted two years) and their subsequent divorce were highly publicized by the tabloid press. In May 1997, Stallone married Jennifer Flavin, with whom he has three daughters named Sophia, Sistine, and Scarlet. His daughters were chosen to share the role of Golden Globe Ambassador at the 74th Golden Globe Awards.Stallone was engaged to model Janice Dickinson for less than a year in the early 1990s. Stallone had ended his relationship with Jennifer Flavin, whom he had been with since 1988, via FedEx after Dickinson gave birth to her daughter Savannah in February 1994. It was reported that Stallone was the father, and Savannah was given his surname at birth. They split up when Stallone discovered he was not the father of her daughter. In 1995, Stallone was briefly engaged to model Angie Everhart before rekindling his relationship with Flavin.Stallone maintains a relationship with his brother Frank who contributed the theme songs to Rambo: First Blood Part II, and Staying Alive. In 1983, Frank's song "Far from Over", for Staying Alive, reached the #10 U.S. hit. Frank appears in minor roles, bit parts, and provides music in many films starring Sylvester, most notably in the Rocky films, where Frank played a street corner singer and contributed songs.After Stallone's request that his acting and life experiences be accepted in exchange for his remaining needed college credits to graduate, he was granted a Bachelor of Fine Arts (BFA) degree by the president of the University of Miami in 1999.In 2007, customs officials in Australia discovered 48 vials of the synthetic human growth hormone Jintropin in Stallone's luggage. In a court hearing on May 15, 2007, Stallone pleaded guilty to two charges of possessing a controlled substance.Stallone's 48-year-old half-sister, Toni Ann Filiti, died of lung cancer on August 26, 2012. She died at their mother's Santa Monica home after choosing to leave UCLA's hospital.Stallone was the recipient of the Heart of Hollywood Award from the Board of Governors of the Cedars-Sinai Medical Center in 2016.He was a close friend of Joe Spinell. They had a falling out during the shooting of their final collaboration Nighthawks (1982).