The 3 Idiots actress will next be seen in the upcoming Bodyguard opposite Salman Khan.
Speaking to the Times of India, she said: "I don't have the patience to go through the whole regimen that needs to be in place for your body to look bikini-perfect.
"So I've decided that I will not wear a bikini on screen again."
However, she added her boyfriend Saif Ali Khan found her "very hot" in a two-piece.
Kapoor last wore a two-piece in Tashan and Kambakkht Ishq.
