In attendance will be President Uhuru Kenyatta.
Sonko hit the ground running where he kick started his term by cleaning up the city and only last week, rejected 25 million for his swearing in ceremony.
He directed that the money pays county workers who have had their salaries delayed.
He on Tuesday vowed to clear all pending payments to contractors and suppliers once he takes office.
“I wish to categorically state here that I have not mandated anyone whatsoever to either solicit or follow up on any pending payment at City Hall.”
The fete will start at 9 am.
The President is also expected to grace Anne Waiguru (Kirinyaga) and Joyce Laboso’s (Bomet) swearing in ceremonies.
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