How old is this blouse?

https://poshmark.com/listing/IZ-Byer-Blouse-57cdfc7c5c12f82dd101a82e I got an identical shirt a couple of years ago from my sister-in-law. It was too small for her and she was purging her closet of her hundreds of items of clothing. (She goes to the mall more than I go to the grocery and doesnt wear her clothes... show more https://poshmark.com/listing/IZ-Byer-Blo...

I got an identical shirt a couple of years ago from my sister-in-law. It was too small for her and she was purging her closet of her hundreds of items of clothing. (She goes to the mall more than I go to the grocery and doesnt wear her clothes much. She's also gained weight and her solution is to just go shopping.)I also got a hot pink shirt of a similar style that came from Maurice's. I used to wear them with just leggings, by I realized they seem to work with my A-line skirts. I get compliments on them and ironically, my husband likes me in them.

I often don't care if something is "old" if I like it. (I'm a happy Goodwill shopper.) I'm just curious if there is a name to the style and the age.
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