Claudine Longet, a French singer and actor who made headlines in the 1970s when she killed her Olympian boyfriend in Colorado , has died at the age of 84. Her nephew, Bryan Longet, announced her death in a social media post on Thursday. “You have been a true inspiration in my life and you will always be," he wrote. "Another star in the sky. Thank you for everything, my aunt.” Reached by phone, he confirmed that Longet had died, but did not reveal the cause of her death. Longet was born in Paris and began acting as a child. She later recorded the hit album Claudine and was widely known for the bossa nova-style ballad “Nothing to Lose”, a highlight of the 1968 movie The Party which starred herself alongside Peter Sellers . Claudine Longet and Andy Williams appear at the premiere of ‘My Fair Lady’ in Los Angeles in 1964 (AP) At the time, she was married to singer Andy Williams , whom she had met in the early 1960s while dancing in a Las Vegas revue.…