Film heroines follow different trends to see peaks in their careers. Generally, a model from North India will try her luck in a Bollywood flick. After facing defeat there, she will come down to South and will establish her own stardom.
After getting good success here, she will move back to Bollywood again. The path they follow appears like a parabola.
This is not just the case with Bollywood heroines, it is the same case with South Indian beauties too. Few South Indian actresses like Trisha and Asin, who got success in Tollywood went up to Bollywood and is returing back to the South for film offers.
Similarly, Telugu girls, Anjali and Sri Divya who faced defeats in Tollywood proved themselves in Kollywood and are enjoying Tollywood again. This too looks like a parabolic curve. Finally, film heroines from all the parts of the nation are following this new parabolic curve trend!