I do not know the names for these tops, but I purchased the following two tops about 15 years ago in the U.S. The left was from a discount store called Marshall at ca. US$20, and the right was from Walmart at US$ 1.00. They are v-neck, striped, semi-transparent knit.

I searched the internet to find similar ones, but difficult to find. Facebook friends said to me that they are called 'see-through', which is apparently Japlish.
After searching using the new key workd 'see-through', I could find and order the following 2 items.

The price is ca. US$9 and $5. I like the left one, but the size is too small, but I ordered anyway as I sometimes wear size 'S' tops.
Any internet store where I can find similar ones?
barbie~~