Reality TV star Kim Kardashian went down memory lane and remembered her teenage days in a throwback picture on social media.In the Instagram image, a young Kim is seen sunbathing."16 year old KK," she wrote as caption with the picture, which currently has over three million likes on the photo-sharing website.Kim and her sisters, Kourtney and Khloe, along with their mother Kris Jenner, are getting into the greeting cards business.