Mamata Banerjee was sworn in at a grand ceremony at Kolkata's Red Road. (Press Trust of India photo)

Highlights Bengal's fanciest oath ceremony on Kolkata's Red Road

Nitish Kumar, Lalu Yadav, Akhilesh Yadav & Arvind Kejriwal in attendance

Mamata Banerjee took oath along with 41 ministers

Delhi Chief Minister Arvind Kejriwal and Uttar Pradesh Chief Minister Akhilesh Yadav attended Mamata Banerjee's swearing-in. Also present was Bihar Chief Minister Nitish Kumar.

Over 20,000 people attended Mamata Banerjee's swearing-in, the biggest oath ceremony Bengal has ever seen