She was crowned "Pantaloons Femina Miss India World 2008" in Mumbai on 5 April 2008.
She was born on 13th July 1987, is 5 ' 8.5" tall and has vital measurements of 32-27-36.
She is originally from Changanacherry - Kottayam, Kerala and now lives in Mumbai,  Her hobbies include: Listening to music, dancing, glass painting, reading, playing basketball and badminton.
She follows the lineage set by many Malayalis in the history of the pageant like Shweta Vijay (Femina Miss India Earth 2003), Annie Thomas (Femina Miss India Universe 1998), Nafisa Joseph (Femina Miss India Universe 1997), Mini Menon (Femina Miss India Asia Pacific 1996) and Shweta Menon (Femina Miss India 1994 2nd Runner Up).
Miss World 2008
She represented India in the 58th Miss World Final which was held at Sandton Convention Centre in Johannesburg, South Africa on December 13, 2008 and finished First Runner Up. Kseniya Sukhinovia from Russia won the crown.
The final round question drew great applause for her quick wit and excellent reply. As to the reply to the question - "What being in South Africa meant to her ?", she replied confidently that it was like home to her. She drew comparison to the fact the people of South Africa was extremely hospitable like the Indians and also that both the nations have given such respected leaders like Nelson Mandela and Mahatma Gandhi who have influenced the lives of millions. Also she added that both the nations shared such a wonderful diverse culture that made them both similar.
She won 3rd place for the Miss World Top Model contest on December 3, 2008. She was one among the top 10 Finalists of Miss World 2008 Beach Beauty contest, where Miss Mexico emerged eventual winner, and Miss South Africa bagged first runner-up and Miss Russia finished the second runner up.
Miss India 2008
During the question and answer rounds in the finals, she was asked “The rate of divorce in India is on a rise. Is Western influence the cause of this or something else?”. Parvathy gave the reply “Divorces are not a result of Western influence. At the end of the day, it is we who decide our worth. Marriage is not when one completes the other but is when both share their completeness.”
After Parvathy's representation in the Miss World 2008 Event, Simran Kaur Mundi will represent India in Miss Universe event and Tanvi Vyas would represent India in Miss Earth event. Parvathy also won sub-titles like Miss Photogenic, Miss Personality & Miss Beautiful Hair in the Femina Miss India 2008 pageant. She was one of the favourites to win Miss India title.
The above three events along with the Miss International event are considered most prestigious beauty pageants in the world and are called Big Four events.