What actors and actresses appeared in Monishaa en Monalisa - 1999?

You're likely thinking of the 1999 Tamil film "Minsara Kanna" (sometimes romanized as "Minasara Kanna" or "Minsara Kanha"), which translates to "Monishaa en Monalisa."

The main actors in the movie are:

* Prabhu Deva as Selva

* Kajol as Priya

* Saif Ali Khan as Siddharth

* Tabu as Monisha

It's worth noting that this film was a remake of the 1996 Telugu film "Prema Desam," which featured the same lead actors except for Tabu.