Kapoor, 63, took to Twitter to thank the actress for being a trend setter and a great performer.
"Remembering Sadhana ji today on her Birthday! Thank you for all the films and your style!," he wrote captioning a black and white picture of the "Mera Saaya" star.
Sadhana, who is credited for introducing the fringe hairstyle in Indian film industry, died last year on December 25, after a brief illness.
Some of her memorable films include "Love in Simla", "Hum Dono", "Ek Musafir Ek Hasina", "Asli-Naqli", "Mere Mehboob," "Woh Kaun Thi" and "Waqt".