Coming from a family of actresses including grandmother Suchitra Sen, mother Moon Moon Sen and sister Raima Sen, Riya has carved out a niche for herself among the youth owing to the bold characters played by her.
The actress made her first screen appearance as a child in artiste in 'Vishkanya' in 1991, directed by Jag Mundhra.
Sen shot her first music video for Falguni Pathak's 'Yaad Piya Ki Aane Lagi', when she was only 16, and went on to act in numerous videos, including 'Jhumka Gira Re', 'Jab Samne Tum', 'Kahin Kahin Se', 'Dil Kahin Hosh Kahin' and 'Jeena Hai Tere Liye'.
However, she made her debut in the silver screen with Tamil film 'Taj Mahal'.
She got her first Bollywood break in N. Chandra's film, called 'Style' in 2001, a low-budget sex comedy.
She has also featured in films such as 'Qayamat: City Under Threat', 'Jhankaar Beats', 'Shaadi No.1', 'Tum... Ho Na!', 'Silsiilay', 'Apna Sapna Money Money', 'Love You Hamesha', 'Heroes', 'Love Khichdi', 'Paying Guests', 'Benny and Babloo', 'Tere Mere Phere' and '3 Bachelors'.
Her first English venture was starring in the film 'It Was Raining That Night', a remake of the Bengali film 'Hei Brishtir Raat'.
She has also delivered a number of item numbers in films such as 'Dil Vil Pyar Vyar', 'Qayamat', 'Plan', 'James' and 'Heyy Baby'.
Sen will be seen next in 'Krrish 3'.
Actor Prosenjit Chatterjee wished the birthday girl, tweeting: "Wish you a many many happy returns of this day.God Bless."