Luisa appears to have been styled after the limited edition Sasha Brunette Velvet doll from 1981 (albeit with rooted hair instead of a wig). She was produced in both 1997 and 1998. I believe my Luisa is from 1997, as the booklet attached to her only shows dolls that were produced in 1997. She wears a navy blue velveteen dress with a lace-trimmed half slip that shows at the hem.
Her skin is slightly darker than Cindy and Calla, my 1980's Trendon girls, and her hair is a beautiful shade of brown (chestnut?) with lots of wave at the ends.