Oh yes, the resemblance is really very striking! But anyway, I agree there with Jenna, it is only a story made for some or other reasons. It is, of cource, a very romantic story and the most of us like to hear stories of lost and found princesses and princes. But could a dramatic story of this kind have remained a secret for so long. Sure, earlier in the world the press was discreet, especially concerning to royal people, but even then there are always rumours. And are there pictures proving the pregnancy, the Simpson was very well known to the press. And if it was true, wouldn't they have adopted the child later. Or perhaps not, when you think over...
But as Jenna says, it is only DNA which could prove the relationship.
This is just my opinion to the matter, and in the whole, it is not my porridge at all!
