I have been experimenting with IG for a while now trying to build accounts with varying levels of success. However I have found a few accounts like https://www.instagram.com/jim_starr_/ with 1.6 million followers and less than 200 posts. I can see from the number of likes each picture gets they are genuine followers before anyone says 'you can buy followers'. Obviously sex sells and the accounts must have some work done on them before as the 'first' picture posted 12 July has 14k likes. I see they always shout out other accounts with similar content which I imagine are owned by the same person. But how do they grow these accounts so big? Just with bots or luck or some secret technique?