White dress: check. Designer dress: check. Drawings all over the back of the dress: check.
In the words of someone over at Gawker, the dress was designed by the master tailor at Atelier Versace and A BUNCH OF SCREAMING CHILDREN!!!
Yes, Jolie adorably gave her children the dress as a canvas to display their artwork, and the entire back was covered in pictures of well, all I can make out are flowers, but I think I also see a plane and a robot and possibly Billy Bob Thornton waving goodbye.
Pax is credited as baking the cake, which was likely made of vanilla and Suri Cruise.