What was the South Indian actress Yash’s first debut south movie?

 The South Indian actress Yash's first debut South Indian film is "Jambhavan" which was a Kannada film directed by P.N. Sathya and released in 2007. The film was not a box office success but it marked the beginning of her acting career in the South Indian film industry.

Yash has since then appeared in a number of Kannada films and has become one of the most popular and successful actors in the South Indian film industry.