Madonna was born in Kerala and studied in Indian School Salalah, Oman and did her higher studies at St Peter's Senior Secondary School, Kadayiruppu. She graduated with a Bachelor of Commerce from Christ University, Bangalore. She is trained in Karnatic and Western music.She is a non-practising Christian.

Films

Madonna has sung tracks for composers like Deepak Dev and Gopi Sunder. Her participation in a popular Malayalam musical program Music Mojo was well received by the audience and acclaimed. After seeing her host a program for Surya TV, Premam director Alphonse Putharen called her in to audition for his upcoming project. Even though she was not interested in acting, she auditioned and was considered for the role of Mary. However, on her insistence that she related more with Celine, Mary's role was given to Anupama Parameswaran.

After Premam, she then made her Tamil debut opposite Vijay Sethupathi in Kadhalum Kadandhu Pogum which was an instant hit. Her second Malayalam movie King Liar, in which she starred opposite Dileep also did well at the box office. Sebastian then reprised her role for the Telugu remake of Premam with Naga Chaitanya and Shruti Hassan replacing Nivin Pauly and Sai Pallavi, respectively.^[4]

Currently, she will be playing a lead role in English feature film Humans of Someone directed by Sumesh Lal and written by Nitin Nath. Sebastian has also paired up with Vijay Sethupathi again after her debut with him in the upcoming Tamil film Kavan directed by K.V. Anand.^[5] She also made a special appearance in Dhanush's directorial debut Power Paandi.

Music

From childhood, Madonna had a strong interest in music. A trained singer in Carnatic and Western music, she has performed for Music Mojo of Kappa TV and numerous popular Malayalam music directors and singers.^[6] In 2015, she sang a song titled Raavukalil for the movie You Too Brutus with musical backing from Roby Abraham. The pair subsequently formed a band named 'Everafter'.^[7]

In January 2016, the band released online its first music video titled 'Veruthe'.^[8] Singing before acting or acting before singing? Madonna very clearly states, “Singing has been a part of my life since childhood and I cannot think of a Madonna without singing. Singing will always remain my life blood!”

Madonna has also sung the jingle composed by Deepak Dev for Hit 96.7, a radio station based in Dubai.^[9]