Railway Minister Laloo Prasad Yadav turned 56 on Friday. There was a long queue of party workers and admirers carrying gifts and garlands outside his Delhi residence in the morning.
Also see: Is that Laloo on your train?
The Rashtriya Janata Dal chief and former Bihar chief minister will arrive in the state capital, Patna, in the afternoon.
The man who recently replaced plastic tea cups with earthen pots in trains and directed that butter milk be the preferred beverage, is likely to cut a 56 kg cake to celebrate the occasion.
The last year he had cut a cake designed like a temple, mosque and a church symbolising communal amity.
It is going to be one unending party with lots of dance and music and distribution of clothes, sweets and food among the underprivileged across state.
The celebrations are likely to be particularly boisterous in the backdrop of the RJD's thumping victory in the recent parliamentary election.
Laloo will meet his supporters in the sprawling official residence of his wife, Chief Minister Rabri Devi.