It's a girl!! I had a feeling it was a girl but I didn't want to say in case I was wrong :). The sonographer kept us in suspense as she checked out all of the organs and measurements and then the last thing she did was tell us the gender. She is measuring right on track and everything else looked great!! Here are some pictures of Olivia:
Side view -- you can see her head, heart, spine, bottom and legs

Profile --she was moving around a ton so it was hard for the sonographer to get a good one

Her little foot --this is Wesley's favorite picture

One more exciting thing I wanted to tell is that my mom got me the car seat and stroller travel system that I wanted. Thank you Mom!!!