Watch Katie Taylor and Amanda Serrano face off on top of the Empire State Building ahead of historic boxing trilogy.

Katie Taylor and Amanda Serrano have developed the greatest rivalry in the history of women's boxing with two fantastic fights. The women are set to face off one more time, headlining a card from New York's Madison Square Garden this Friday night with Taylor's four junior welterweight championships on the line.

Here are the best photos leading up to Katie Taylor and Amanda Serrano's trilogy fight from Madison Square Garden on July 11.