One year after wearing Marilyn Monroe's "Happy Birthday, Mr. President" dress, the SKIMS founder hit ... top made from more than 50,000 freshwater pearls and 16,000 crystal pearls.

Osterhoudt showed off her glamorous Goodwill find in a TikTok video last week, modeling the lace, pearl ... but the dress." Osterhoudt then recounted how she came to find the designer item ...