The two actors have been at loggerheads since the "Queen" star called Hrithik her 'silly ex'.
"I really think it is none of my business to be judging anyone but I have the greatest admiration for Kangana because she is standing up for herself," Vidya told reporters here.
"I think that is very creditable because as women we find it very easy to stand up for other people, our family members, children, husbands, parents but we rarely stand up for ourselves. She (Kangana) is standing up for herself, so kudos to her and more power to her for that," the "Kahani" actress added.
When asked what he feels about the "Tanu Weds Manu" actress, who sat beside him during the national award ceremony recently, the 73-year-old "Piku" star was more cautious in his reply.
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"Can't decide the behaviour of a person, or what he or she is going through, by sitting beside them... But I appreciate that women are empowered, they stand on their feet.
"We've always believed that women should have their own strength. Fifty per cent of the nations population, so there should be as many women and that much strength should be there. They should have importance in society and we have always believed that."
The 29-year-old actress, however, has hit back at her critics saying no amount of slamming will bog her down and she doesn't care about being called "psychopath or a witch."
The feud between Hrithik and his "Krrish 3" co-star turned nasty after they slapped legal notices on each other.
Hrithik, who was the first to send the legal notice, has demanded that she apologise in a press conference and clear the air about their alleged affair which he firmly refutes.
Bachchan also said that he is a huge admirer of Kangana's acting skills and quipped her often asks the "Katti Batti" actress to recommend his name in her films.
"I am a huge fan of her. I believe she is an exceptional actress and whenever I meet her I fold my hands and pray if she can recommend my name in her next film," he said on a lighter note.