By Ewelina Lepionko Instagram challenge is sweeping Russia and inviting people to pose as though they've fallen flat on their face. Russian supermodel Natasha Poly launched the challenge and hashtag of this summer's #fallingstars2018. This challenge involved not only famous people, all those who consider themselves a star. The challenge is proving to be particularly popular among Russian millionaires, as scores of images capture people apparently face-planting the tarmac after disembarking from private jets. A bizarre new challenge sweeping Instagram has seen people sharing photos of themselves fallen from boats ...