Barbie wearing a traditional "Maria Clara" dress
The official national costume of Filipino men is the barong tagalog. The upper garment of the boy in the picture is a barong. It is worn over a Chinese collarless shirt called camisa de Chino. The boy is also wearing the traditional wide-brimmed hat salakot, which is usually made of rattan or reeds.
The official national costume of Filipina women is the baro at saya (= baro't saya). The baro is the top blouse. The saya is the skirt.
They look like Ferdinand and Imelda Marcos! She was famous for wearing the terno with its butterfly sleeves.