He's third in line for the british throne and today, baby prince george was welcomed into the church of england. He was wearing a replica of a 19th century christening gown. Annabel Roberts found out the ceremony also had elements that broke away from tradition.
Prince george was carried by his father prince william into the chapel at saint james' palace where the service was held today.
He looked very calm and unmoved as he was brought in for this, his second big moment in the spotlight.
Baby george - he's now three months old - was wearing an elaborate lace and satin gown that is an exact replica of one commissioned by queen victoria for her eldest daughter in 1841.
There were just 22 guests at this very private service - william's brother harry was there of course, along with william's father, charles, his wife camilla and the queen and prince philip.
Kate's immediate family were also there - her parents and her brother james and sister pippa. "I think a grand event now I think they probably thought would look wrong. And I think they're always looking forward to this baby who will one day be king's life, and of course he will be king, hopefully, in such a long time that to look back and to think he had a grand christening would look very old fashioned."
There are seven godparents - their names not revealed until this morning.
Most of them are kate and william's close friends - but there's also zara phillips, william's first cousin, daughter of princess anne -and she's also by the way an olympic medallist.
The service lasted less then 45 minutes - prince harry read from the bible as did pippa - and the congregation sung two hymns.
This chapel is not only old and historic, it's also where princess diana's body was laid before her funeral, where prince william effectively said good bye to his mother in private before the big funeral in westminster abbey - so there's much significance in william and kate's choice of venue. "There are unfortunately no pictures from inside this private service this afternoon but afterwards the group all walked next door to an apartment at st. James' palace - for a very british tea party. Here official photos will be taken, and these will be released late tomorrow. Annabel roberts, nbc news, london."