I think she made her debut in Tamil in a Ramesh Aravind starrer. I vaguely remember she does show her navel. But I’m not sure. Then she stopped showing the navel. Then she hit big time with Ejamaan (1993) with Rajini. In the next year, after some films, she acted in Sethupathi IPS and made a big show of her deep navel. Then her navel had a constant presence in almost all the movies she acted. And Muthu (1995) was the icing on the cake. In the ‘thillana thillana’ song there were atleast 15 close up shots of that navel. In the same movie (song - kuluvalile) her boobs got special attention. It was a delight to see her moving the boobs up and down in close up shots.
Then came Naam Iruvar Namakku Iruvar (1998). By then she had lost her No.1 position to others heroines. To keep herself in the market she turned wild in this Prabhu Deva starrer. Hot numbers, cleavages, and to top it all she appeared in swimsuit for the first time (Even though it was only for a few seconds). Even that exposure didn’t help her career.