Answer:
"The first Barbies and Kens wore simple swimsuits, giving little hint of the amazing variety to come."
Explanation:
I believe the word "foreshadowing" means that well, the event happened in the past. I could be wrong, though.
The literary device used in these lines is Personification.
The personification is a figure of speech in which a thing is given human attributes. The non-human objects are portrayed in such a way that we feel they have the capacity to act like human beings. This device makes the piece more interesting to read and makes it more sensitive to the reader.