Vaani Kapoor.
Considering her career in Bollywood only, she never had a flop although I must mention she has appeared in only 3 films in a span of 6 years.
Debut: Shuddh Desi Romance(2013).
Budget: Rs. 22 crore (approx).
Box office: Rs. 76 crore (approx).
It was a critically acclaimed and commercially successful venture.
Movie 2: Befikre(2016).
Budget: Rs. 64 crore.
Box office: est. Rs. 83 crore.
Verdict : Average but was financially successful for the production house yielding them 50% profits.
Movie 3: War(2019).
Budget: Rs. 150 crore.
Box office: est. Rs. 474.79 crore.
It was the highest grossing film of the year in the Indian box office.