Parvathy was born on 13th March 1987 at Changanacherry - Kottayam, Kerala as the first child of Mr. Omanakkuttan Nair.
Her birth name is Parvathy Omanakuttan Nair.
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.
She participated in Femina Miss India 2008 and won the Miss India World crown. 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.
In a star-studded ceremony at the Hyderabad International Convention Centre held in December 2007, Parvathy Omanakuttan was crowned the first ever Pantaloons Femina Miss India South 2008. Winning the PFMIS 2008 contest got her direct entry in the top 10 finalists of the Pantaloons Femina Miss India 2008. She also won few more subtitles in PFMIS 2008. She was crowned as PFMIS 2008 by Ramya Krishnan, a famous South Indian actress.
Her hobbies include listening to music, dancing, glass painting, reading, playing basketball and badminton.
She follows the lineage set by many Keralites in the history of the pageant like Shweta Vijay (Femina Miss India Earth 2003), Annie Thomas (Femina Miss India World 1998), Nafisa Joseph (Femina Miss India Universe 1997), Mini Menon (Femina Miss India Asia Pacific 1996) and Shweta Menon (Femina Miss India 1994 3rd Runner Up).
Before winning the coveted PFMI 2008 and PFMIS 2008 pageants, she also won several other contests. They are "Miss Malayali 2005", "Malayali Manka 2005", "Navy Queen (Southern Naval Command, Cochin) 2006", "Miss SVKM (Sarva Vidyalaya Kelvani Mandal, Mumbai) 2006", "Lions Club Dreamgirl 2007" and "Navy Queen (Vizag) 2007"