12 week enhanced check for deformities?

I've heard so many people tell me that at this enhanced 12 week scan they can tell me the sex of the baby... Has anyone been told at this scan? We're so excited to find out the sex, I don't know is I can wait another 6 weeks, well I guess we'll find out tomorrow at the scan, if they can or not. Praying for a baby girl, but a healthy baby is perfect. :)