Fans have always known that Britney Spears is so strong, and this just took it to a whole new level. In her latest post to Instagram from September 17, the “Circus” singer, 38, turned her world upside down by doing a handstand and then proceeding to walk across the grass! In the video, Britney wore a red tube top and black short shorts with sneakers as she swung her legs up in the air and used her hands to walk across the ground.