The 17-year-old actor, known for her roles in films like "Dangal" and "Secret Superstar", was allegedly molested on a Delhi-Mumbai flight on Saturday night.
The actor later narrated her ordeal on Instagram via a live video.
Wasim said she was on an Air Vistara flight from Delhi to Mumbai when a co-passenger sitting behind her put up his feet on her armrest.
The man was arrested by police in Mumbai last evening.
When asked about the incident, Pednekar said she was shocked to know about the alleged molestation but the actor was happy that Wasim showed courage to speak up about her ordeal.
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"But I am very happy that she put it out on social media. I am glad she took that step because it needs a lot of courage to speak, to come out and take a stand like that. More power to her," Pednekar said.
Actor Kareena Kapoor Khan said women are far superior than men and the females can rise above any difficulty.
"I definitely feel women are way more superior than men. We are fighters and whichever situation it is in our life, personal or professional, we all come out as fighters. When we talk about God, we talk about goddess. So, we look from the perspective of a woman.
Actor Taapsee Pannu, who has always raised her voice against violence against women, said, "I just hope she gets justice. It is good that at least she has raised her voice. She deserves to get justice."
Noted actor Madhuri Dixit said, "This should not happen, neither in India nor in any other part of the world."
Television actor Mouni Roy said she was deeply saddened by the incident, which is an act that stems from a poor mentality.
"I genuinely don't know what to say. It deeply saddens me. The kind of life we lead, the kind of education we all are getting, in fact, the levels of education in towns and villages have gone up. This is just really sad. I think this reflects a poor mindset," Roy added.
The celebrities were speaking at the red carpet of Lux Golden Rose Awards here last night.
Actor Zareen Khan said there should be a focus on preventing such incidents rather than attending to "minuscule" things.
"I really don't know what to say about it because such incidents keep happening in our country. Rather than focusing on issues like these, I don't know why our country is behind minuscule matters," she said.
In the video, which Wasim recorded immediately after deboarding the flight, she broke down several times.
"This is not done, I am disturbed... Is this how you're going to take care of girls? This is not the way anybody should be made to feel. This is terrible!" she said.
"No one will help us if we don't decide to help ourselves. And this is the worst thing," she added.