Article continues below advertisementBritney Spears is doing what?!In a new Instagram video from Saturday, August 23, Spears teased her upcoming plan to turn her IG account into a subscribe-and-pay platform for her 41.9 million followers."OK, guys, I've come up with the best idea. I've decided to change my [inaudible] on IG," she revealed. "And because it's going to be so different, that means you guys have to pay and subscribe to see it.