Simon Biles makes history: American gymnast wins record 25th World Championship medal

She's a four-time olympic champion, she's now the owner of 19 gold medals and yet she's just 22-years-old. Simone Biles became the most decorated gymnast in history, winning two more (beam and floor) to take her career tally to a total of 25 medals. An historic week-end for gymnastics, and for her!