Taylor has won both of their previous fights, but they were really close. The judges gave her the win both times, but many people thought Serrano could have won too. Their last fight was less than seven months ago in Texas.
Since then, Taylor has been busy. In November 2023, she beat Chantelle Cameron to become the undisputed super-lightweight champion. Now she's got even more belts to defend against Serrano.
Serrano wants to win this time. She's hoping it'll be "third time lucky" for her against Taylor.
Jake Paul's company, Most Valuable Promotions, is putting on the fight. It's the same setup as when Taylor and Serrano fought on the undercard of Paul's match with Mike Tyson.
Speaking of Tyson, he thinks Taylor will win again. He told Jake Paul:
"I got Katie… Nah I got Katie… I like that… Then you said you gotta take me out to dinner too."
Tyson even bet $1 million with Paul on Taylor winning.
Taylor's boxing career has been amazing. Before turning pro in 2016, she won 18 gold medals as an amateur. Now, at 39 years old, the fighter from Bray has been the undisputed champion in two weight classes. If she beats Serrano again, many will say she's the best female boxer ever.