London-based Filipina actress and singer Christine Allado has arrived in Brisbane to sing the Philippine national anthem on Sunday, when Filipino boxer Manny Pacquiao takes on undefeated Australian fighter Jeff Horn.

"I'm so honored and nervous but I'm really, really proud to be representing our country for the Pac-Horn fight: The Battle of Brisbane," she said.

The Filipino actress is no stranger to the stage. She is part of the West End production of the Broadway hit "Hamilton," and will portray Peggy Schuyler and Maria Reynolds in the musical which will premiere at the Victoria Palace Theater in November.

Allado’s West End credits include “From Here to Eternity,” “Here Lies Love” and “In the Heights.”

Last year, she shared the stage with Andrea Bocelli in his Manila concert.

Pacquiao will face Horn for the WBO welterweight championship on Sunday at the Suncorp Stadium in Brisbane. At their weigh-in Saturday morning, the two fighters met the 147-pound limit, with Pacquiao tipping the scales at 146 pounds and Horn at 147 pounds.