After a weekend that saw footage emerge of Prince Harry partying to the max while on an African holiday with his now-ex girlfriend Chelsy Davy.
The younger brother to Prince William was seen snorting alcohol, but a royal insider does not believe the heir to the throne will be comfortable getting up to that kind of shenanigans when he has his stag do later this year.
However, ahead of his wedding to Kate Middleton in April he has been told he 'better beware' that a 'no holds barred' stag do is likely to be on Prince Harry's agenda.
"William is much more reserved, even a little shy," a royal observer told The People.
"So he'd better beware what Harry is lining up for his stag holiday.
"With Harry's sense of mischief it will be no holds barred."