Taking to Twitter, the filmstars not only praised women's undisputed abilities but also gave credit to them for their immense contribution to their lives.
Bachchan, 74, said, "On International Women Day, without 'HER' even 'HERO' IS '0'."
Shah Rukh, 51, posted, "Hold her hand so that she can lead you. Happy Women's Day."
While Ajay wrote, "Let's celebrate everyday as #womensday, so we never need only one day!"
Sushant Singh Rajput, who "aspires to be like his mother and sisters", tweeted, "everything in me I could be proud of, I've learned it from them."
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Harshvardhan Kapoor thanked his mother, Sunita Kapoor, and sisters, Sonam and Rhea Kapoor, for making him a "better person".
"I'm a better man because of these amazing women in my life... Happy Women's Day mom, Sonam, Rhea and all you wonderful women out there... Not just for today because you need to be celebrated every day," he wrote.
Director Hansal Mehta posted, "Strength, inspiration, love. Daughter, mother, educator, social worker, companion. Happy Women's Day my love @safeenahusain.