Wikipedia
The Barong Tagalog, more commonly known as simply Barong (and occasionally called Baro), is an embroidered formal shirt which is considered the national dress of the Philippines. It is lightweight and worn untucked over an undershirt.
Today, in lowland Christian Filipino culture it is common formal attire, especially at weddings. Less formal variants are used also as uniform in schools, universities and offices. Through the years, it has occasionally been feminized and worn by women. This may be seen either as an egalitarian or haute couture fashion statement, or as a form of power dressing when worn by female politicians such as when Philippine President Corazon Aquino wore it at various times during her presidency.
The Barong Tagalog was popularised as formal wear by President Ramón Magsaysay, who wore it to most private and state functions, including his own inauguration.