a very small group, only a handful of "senior royals" and Middletons plus the godparents. This was probably done precisely to keep out the accumulating number of black sheep brought into the fold through royal marriages in recent years.
The Christening gown is a reproduction of one that was made in Queen Victoria's reign, and which has been used at practically every royal Christening ever since. The original is now very fragile and is stored safely away - and so a replica has been made.
agree Mikey
what about the dress Kate was wearing with the archly positioned flying pleat/frill so that if the Royal Babe puked down hus mum
she just sudduv turn the flap over....and cover the Royal Posset