Can someone tell me what is going on?

So both girls are waking up every night at 2:30/3am. It is like clockwork and I cant figure out what is going on. Bedtime has gotten better so thats a plus but UGH the screaming at 3am, it is driving us insane and we get into the whole CIO battle. Tony wants to let them CIO and I am still against it. They are 16 months, 14.5 months adjusted so maybe there is a developmental reason for the waking?? Any insight or do they just hate us?
I am not some sort of martyr when it comes to their sleep, like "oh look at me, I give my kids everything including my sleep" because if you give them your sleep time well just give them your sanity while you are at it. I just try to keep things in perspective and repeat all the time "sleep is a series of highs and lows".
So since I dont know when I will be sleeping through the night, I've been making an effort to get to sleep on time. My latest craft obsessions are making it hard though. Have you heard of freezer paper stencils?? So easy and so much fun!I am officially hooked.
I made this shirt using freezer paper-

I used a large piece of freezer paper, cut out the shapes which creates a stencil. Iron the freezer paper onto your shirt and voila! I went the extra step and colored the shapes in.
This blog was my inspiration-
http://samstermommy.blogspot.com/2009/09/painted-jeweled-onesie.html

I also used the basic idea behind the bandana dress to make this dress. I found the fabric at Joanns and it was too cute (and cheap!) to pass up.



You can find the tutorial here
http://www.joyshope.com/2009/05/simple-bandana-dress-tutorial.html

I simply cute the cupcake fabric into the same size as a bandana and went from there.

Who needs sleep? Ya never gonna get it....

Who needs sleep? Whats that for.
Yeah I am stealing some lines from Barenaked Ladies. Their lyrics seemed appropriate given the state of sleep in this house.
The twinsies are 15 months actual, so 13.5 months corrected. A quick look at moxie shows that there is a common sleep regression period around 13 months, so it seems to jive with what is going on with the girls. They wake up in the middle of the night and SCREAM. It isnt whimpering, it is blood curdling outright screaming. We go in and thus begins the dance. Fine when someone is in there, screaming begins again when we leave. We try to co-sleep, something we've done in the past, but the offender wants nothing to do with that. To them co-sleeping is an invitation to a late night party.
It seems like Ashlyn is having the rougher time, well aside from mommy & daddy, and I know her starting to walk is probably playing a role as well.
Another surprising development is Fiona is clinging to daddy, so much that if he leaves her sight, it is a full out temper tantrum. I have to be honest and say I feel a bit slighted. While they are still beating down the bathroom dorr while I am in there, I dont get the clinging to daddy thing. Is it because he works so much and they are already sensing this? I just feel like a total bad guy when I have to take her out of the office so he can work.