The 24-year-old singer took to Instagram to post a picture of herself wearing a gown the legendary fashion designer, who died yesterday (20.10.14) aged 82 at his Connecticut home, had created for the Costume Institute Gala in New York in May, and she added a heartfelt message praising him.
She wrote: "My all-time favorite designer has passed away. Oscar, it was an honor to wear your creations and to know you. In loving memory (sic)"
At the event in May, she said: "Oscar de la Renta is the designer I've idolised since I was a little girl. Having an opportunity to wear a one-of-kind gown designed by him is a daydream realised."
Taylor's friend, model Karlie Kloss, also paid tribute to the designer on her Instagram, praising him for inspiring her in life and helping her to become who she is today.
In a message attached to a picture of the designer, she wrote: "The world lost one of the most extraordinary people that I have ever met. Thank you for helping me become the woman I am today and for always inspiring me to be better. There simply is no one else like you."
Several other stars have also paid tribute to Oscar, including supermodel Naomi Campbell, who described him as a 'gentleman of fashion'.
She wrote: 'The Gentleman of Fashion you will always be !!! R I P@oscarprgirl @OscarPRGirl #Oscar de la Renta (sic)'
Actress Jamie Lee Curtis wrote: 'I've worn Oscar de la Renta's signature fragrance my whole adult life. It is like his designs & life. Classic, soft, feminine & elegant. RIP (sic)'
I've worn Oscar de la Renta's signature fragrance my whole adult life. It is like his designs & life. Classic, soft, feminine & elegant. RIP
— Jamie Lee Curtis (@Curtisleejamie) October 21, 2014
Gloria 'Doc Doc Doc Doc Doctor Beat' Estefan tweeted: "RIP iconic designer Oscar De La Renta,who was a big part of 3 of my life's biggest moments.Much love & peace2 his family& all who loved him! (sic)"
Oscar's cause of death is not yet known but he was diagnosed with cancer in 2006.
To read about some of the more famous bodies he's clad in his designs, make your way here.