|Dress: Pleats Please by Issey Miyake (online shopping here; or|
similar at $60 here, here)
Shoes: Valentino (old, same style here)
My favorite travel outfits are Pleats Please clothes. They are stylish but super comfortable, light enough but wrinkles free, washable and fast-drying.
I normally wear their size 2 or 3. The size most likely indicates the length.