Her breakthrough role came in 1999 with the Bollywood film "Hum Aapke Hain Koun..!", which marked the beginning of her successful acting career. The film's massive success catapulted Aishwarya to stardom, and she went on to appear in a string of hit movies throughout the early 2000s. Her performances in films like "Mannisha Kooch Nahi Hoti" (2002), "Devdas" (2002), and "Chak De India" (2007) showcased her range and earned her critical acclaim.