This is a wedding cake on display by Disney at their recent Fairy Tail Weddings Expo that's been projection mapped so you can display video on it. In this case, Tinkerbell and a horse and carriage. It's not the first time I've seen a projection mapped wedding cake (Donkey Kong one HERE), it's just the first time I've seen it offered as a wedding service. Of course, it's only offered as option in Disney's 'Wishes Collection', which starts at $12,000. Sounds too fancy for anyone I know. I've been to weddings before where honest-to-God strippers jumped out of the cake. Those marriages generally don't last.
Keep going for two videos of the cake in action.
Thanks to Melissa B, who agrees the best wedding cake is deep-dish apple pie with a scoop of vanilla bean ice cream on top.