Salman Khan, the son of famous screenwriter Salim Khan, made his acting debut in 1988 with the film "Biwi Ho To Aisi." However, it was his breakthrough role in "Hum Aapke Hain Koun..!" (1994) that catapulted him to stardom. Kajol, on the other hand, began her acting career in the early 1990s with films like "Bekaraar" (1992) and "Baazigar" (1993).