MyKayla Skinner has doubled down on her remarks about Biles as the Olympic gymnast and former swimmer trade barbs on social media.

Simone Biles and Riley Gaines exchanged a series of tense comments online over disagreements on transgender athletes. Here's everything to know about Simone Biles and Riley Gaines' feud.

The retired Olympic gymnast, 28, has accused former teammate Simone Biles of bullying, days after the 11-time Olympic medalist apologized to Riley Gaines for comments made during a heated social media debate over transgender athletes.