Lisa Rinna is showing off her sensational bikini body on Instagram. The reality star, 59, may have been in throwback mode as she posted for her army of followers recently, but she still gained plenty of likes for showing off her jaw-dropping abs and tiny waist. Lisa has been making headlines lately for confirming her exit from the television franchise that made her famous, but the Bravo star has plenty else going on— she’s running two brands alongside continuing to prove massively popular on social media. Lisa opted for a tiny red string bikini. She also shouted out TV series Dancing with the Stars, which she has participated on.