Wears chonky boots to make himself look taller.
Some heels on those things.
https://i.dailymail.co.uk/1s/2023/12/12/19/78880213-12856097-Timothee_Chalamet_looked_dapper_as_he_continued_his_press_tour_f-a-3_1702408901364.jpg
https://i.dailymail.co.uk/1s/2023/12/12/19/78880211-12856097-image-a-54_1702408446851.jpg