Biles tumbles to gold on floor exercise

Simone Biles of the U.S. competes during her floor routine in the women's apparatus final at the World Gymnastics Championships at the Hydro arena in Glasgow, Scotland, November 1, 2015. REUTERS/Russell Cheyne -

GLASGOW (Reuters) - Simone Biles showed off her sassy moves and explosive tumbles on the floor exercise to land her fourth gold medal at the gymnastics world championships on Sunday.

A crowd-pleasing routine full of hip-swinging moves to the music of 'Perhaps, perhaps, perhaps' included her trademark element, a soaring double layout with half twist at the end.