The Only Way Is Essex star James Argent has not made any contact with friends or family since 3am on Friday morning, police said.
At the time of his disappearance James was wearing a blue tracksuit, believed to be Nike brand and in possession of a blue sports bag. He is known to frequent the Brentwood area of Essex and various nightclubs in the Redbridge area.
Police said they were "increasingly concerned for his wellbeing" and asked anyone with information on his whereabouts to call police.
More top news
Donald Trump's response to an investigation into Russian meddling in the 2016 election suffers a set back as his lawyer quits.
Theresa May accused Russia of a ‘brazen and reckless attack against the United Kingdom’ as she arrived at the spring European Council.
Better with the sunny spells