She visited the church premises along with Trinamool Congress MP Derek O'Brien and took the blessings of Archbishop.
She also greeted people on the eve of Christmas.
"I wish Merry Christmas to all my brothers and sisters in the state, country and all over the world. Tonight I am attending prayers with my Christian brothers and sisters. May we all celebrate the festival with joy, love and cohesion with the entire humanity and spread the message of goodwill among all," she said in her Facebook post.
The security in the city and areas near Park Street have been tightened as scores of people are thronging the churches and restaurants on the illuminated street.