When it comes to inventing new Instagram trends, you can rely on Hollywood celebrities to be the pioneers. It started with the controversial thigh gap, where the focus of the Instagram photo was on the gap between the inner thighs. Then, it moved on to the bikini bridge, where the space between the bottom of the bathing suit and your hip bones when you lie down is in attention. And now, the latest in line is ribcage bragging — which is all about maximum exposure of the rib cage in the Instagram photo.Celebs such as Kate Beckinsale and Bella Hadid can be seen following the trend. Here are the photos.