The confirmation was made by television director Wenn Deramas during Anne Curtis' first taping day for 'Dyosa' in Calatagan, Batangas.
"Yes, gagawin na nga 'yung Betty La Fea," said Deramas.
Deramas said he will be meeting today with other network officials to discuss the series.
"May meeting nga ako kasi gusto na nila na simulan 'yung Betty La Fea. Mayroon pang "Dyosa" kaya pag-iisipin ko din kung paano," Deramas added.
Betty La Fea is the story of a not-so-pretty but intelligent woman who falls in love with her boss and decides to have a makeover.
Prior to Deramas' confirmation that Alonso will play Betty La Fea, there were other actresses being considered for the role.
They were "Lobo" star Angel Locsin and "Maging Sino Ka Man" mainstay Anne Curtis.
Earlier reports had said singer Regine Velasquez was also considered for the series.
In February, Velasquez appeared on the entertainment show "The Buzz." She said she was the one who broached the idea to "someone" that she wanted to play the role of "Betty La Fea", or Ugly Betty, in the Philippine edition of the popular TV series. The show was first aired in Mexico and it later had a successful US version.
The singer said that her interest in doing "Betty La Fea" and her excitement over the subsequent offer from ABS-CBN first made her decide to say good-bye to GMA-7.
Velasquez emphasized that she was genuinely interested in doing the series. She pointed out that she would not have risked employment at GMA-7 and her good relations with the station if she was merely creating a ruse to get better terms for her new contract.
In the end, Velasquez decided to stay with GMA-7.