A version of this article appears in print on , Section A, Page 22 of the New York edition with the headline: ‘Barbie,’ ‘Saltburn,’ Louis Vuitton: When TikTok Subsumes Culture.

Louis Vuitton came out a winner at the Oscars last night by dressing Best Actress winner Emma Stone and Best Supporting Actress winner. ... They’ve co-authored a book, Barbie: The World Tour Book, to ...