It's been quite a year for dad-to-be Prince Harry.
Between marrying Meghan Markle, announcing their exciting pregnancy news and embarking on an intensive 16-day Royal Tour of Australia and the Pacific, you'd be forgiven for not realising Prince Harry actually hasn't had a drop of alcohol in three months.
According to sources, the former party boy has has swapped the boozy nights out for quiet nights in with his pregnant wife.
"Meghan obviously cannot drink during her pregnancy and Harry wants to be there to support her," an insider told The Sun of the sober royal.
"When they are in London, they have been spending more nights in together as he cannot go out drinking with friends like he used to."
Over the years, the 34-year-old earned the party prince reputation after several high-profile scandals, most notably his strip billiards run-in in Las Vegas in 2012.
WATCH: How the Royal Family reacted to Prince Harry and Duchess Meghan's pregnancy announcement. Post continues...
But since marrying 37-year-old Meghan Markle, Harry has settled into married life and is said to be taking his role of father-to-be very seriously.
The last time Harry and Meghan were seen enjoying a tipple was during their royal tour of Dublin in July.
It's believed the Duchess found out she was expecting shortly after this trip.
In the past, foodie Megs has admitted to enjoying the occasional drink here or there. In fact, her now defunct blog The Tig was named in tribute to her favourite red wine, Tignanello.
"Of course, I'm going to have that glass of wine — it's delicious and I enjoy it," she explained in a 2015 interview.
"Do the things you enjoy within reason. Know your body and what works for you and you'll be fine."
And that's not the only guilty pleasure Harry's ditched.
The New York Daily News claims Meghan has convinced her man to quit smoking for good.
"One of the reasons she got him to quit smoking is because smoking affects sperm production," an insider explained to the publication.
Instead of wandering home as the sun comes up, Harry now hits the exclusive KX private members health club in Chelsea first thing most mornings.
His new lifestyle is clearly paying off with the former military man shedding an impressive 4.5 kilos since December last year.