DMK chief M Karunanidhi's daughter M Kanimozhi on Monday took oath as a member of Rajya Sabha on the first day of the Monsoon Session of Parliament.
As the house met for the day, her name was called for taking oath or affirmation.
Kanimozhi, who was re-elected to the upper house in June, took oath in Tamil after which she greeted chairman Hamid Ansari.
Ansari with folded hands remarked, "Welcome back" as members thumped their desks to welcome her.
She greeted senior leaders in the house before taking her seat.