Ivory, 89, won the Oscar for adapting Andre Aciman's 2007 novel of the same name for the Luca Guadagnino-directed film. This is his maiden Oscar win 30 years after his first nomination.
Before Ivory, Ennio Morricone was considered the oldest winner in a competitive category. He was 87 when he won the award for original score for "The Hateful Eight" in 2016.
Wearing a shirt emblazoned with the face of "Call Me By Your Name" star Timothee Chalamet, Ivory thanked his deceased Merchant-Ivory partners Ismail Merchant and Ruth Prawer Jhabvala as well as novelist Andre Aciman.
Ivory, Merchant and Jhabvala also frequently collaborated with Bollywood superstar Shashi Kapoor.
They worked on classics such as "The Householder", "Shakespeare Wallah", "The Guru", "Bombay Talkie" and "In Custody".
Ivory has also worked with Indian talents such as Naseeruddin Shah, Ratna Pathak Shah, Om Puri, Uttpal Dutt, Dina Pathak, Zohra Segal, Amjad Khan and Aparna Sen.
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