Separated at birth?

To cop a posting theme my brother Steve frequently employs on his blog, Hamiltonium, here are photos of two of the Z Kids in their respective hospital nurseries, shortly after birth. Without checking the properties of the images, can you tell who's pictured in each?

BUZZ! Time's up. Pencils down. Got your answers ready?

The photo on the left is Zienna. The one on the right is Zoë. While these photos don't do just justice to the striking resemblance my daughters bore to one another at birth, they were the best I could do, given the relatively small number of film pictures I snapped at Zoë's birth (as opposed to Zienna, who, thanks to digital photography, has been photographed several hundred times in her first two weeks of life!).

Zienna's features have softened since, her hair has lightened, and overall, she's more delicate in appearance. But there's still a definite similarity between the girls. Or, as Kelly's Aunt Missy put it on the baby book at Mercy Medical Center's Virtual Nursery, "She's definitely a Hamilton baby."

And please, refrain from posting wisecrack comments about what Missy meant, as she immediately went on to add, "She is just beautiful." So there.

Now I supposed I'd better change the subject from photos and Zienna's changes in appearance-quickly-before someone posts a fair comment. Something like, "WHY ON EARTH HAVEN'T YOU POSTED ANY OF THOSE 'HUNDREDS' OF PICTURES OF ZIENNA THIS WEEK?" Ahem.

Oops! Look at the time. Gotta run and prepare for Zoë's birthday party...