The annual Miss Tiffany's Universe pageant brings together 21 international contestants showcasing their beauty but also spreading a defiant message for equality from across the globe.
"People are open-minded in Brazil for a lot of things, but it is a big country... and for sexuality people are discriminated (against) a lot. I know a lot of friends who were murdered," said the 22-year-old Moura, who was crowned Miss Trans Brazil in 2019.
"I hope this (will) change," the 22-year-old added, decrying the strident transphobic and homophobic views of her country's far-right populist president Jair Bolsonaro.
Moura lauded her parents for helping her through the stigma and practical difficulties of coming out as a teen and is now ready to strut her stuff under the glittering lights of Tiffany's.
"I am very proud to be representing my country," she said.
The event has been held since 1984 in Pattaya, a resort town a few hours outside Bangkok notorious for its raucous nightlife and laissez-faire attitude to sex.
The city is home to thousands of transgender women -- many working in the area's sprawling sex industry because of stigma that curtails their employment and educational opportunities elsewhere in Thailand.
Contestants say the pageant is a chance to challenge that discrimination.
"Having a good attitude shows the people that don't like us that being a transgender person isn't a bad thing," says 22-year-old Thai contestant Ruethaipreeya Nuanglee, who defends her crown late on Saturday.
"We can't make people like us. (But) I have a plan. I want be a spokesperson to push for a change of law for transgender people."
Pattaya has been hard hit by the COVID-19 epidemic sweeping the globe, with tourist numbers falling off a cliff after China closed its borders and western visitors stay at home fearing the outbreak.
Businesses have reported drops in revenue of up to 90 percent as tourists defer travel plans, leaving hotels empty and tourist knick-knack stalls bereft of customers.
Miss Tiffany Universe contestants posed in ball gowns and face masks before the competition to support public health measures to control the virus.