She went to St. Joseph's Anglo-Indian Higher Secondary School, Perambur, Chennai, and graduated from Women's Christian College.

At age 10, she was a part of a Jackson Five-style troupe called Young Stars which formed the base of her early singing and music composing career.

She was also a theatre artist in her college and appeared in several stage plays organised by The Madras Players and EVAM.

After she rendered a song in Gautham Vasudev Menon's Vettaiyaadu Vilaiyaadu,[5] he asked her to play as one of the lead female character in his next venture, Pachaikili Muthucharam.

In 2011, she agreed to play a minor supporting role in Venkat Prabhu's multi-starrer Mankatha, which was released in August 2011 and became one of the biggest commercial success.

[12][13] In 2013, Andrea made her debut in Malayalam cinema with Rajeev Ravi's romance film Annayum Rasoolum, in which she played a Christian salesgirl opposite Fahadh Faasil.

Then she appeared as lead in Aranmanai 3, directed by Sundar C Though the film received mostly negative reviews, it became a commercial hit.

[26] She has also completed shootings for Tamil movies like Maaligai and Myskkin's Pisaasu 2, and she is currently filming Kaa, in which she plays the lead role.

Andrea has stated that her focus was always on music,[8] that she chose to be a professional singer and that acting happened by chance.

[29] She has sung several popular songs for composers Harris Jayaraj, Yuvan Shankar Raja, Anirudh Ravichander, Thaman, Devi Sri Prasad and G. V. Prakash Kumar[30] and has also received nominations at Filmfare and Vijay Awards for a few of them.