This is a subtlety variegated Brugmansia with double flowers. Now if that isn't exciting enough for you, check out the picture which has more bubble-wrap in it than I'd like. See those flowers? Yes when the 2nd bloom emerges it's yellow and turns pink in a day or 2.  Phew! How good is that?

As you can imagine, demand is very high for this x Candida hybrid so expect to pay a huge amount for one of these at a plant fair or show. 

Brugmansia 'Pink Perfektion'