I have to say in my opinion it is definitely true that the second child seems to do things more quickly than the first. Brooklyn already started crawling!! While we were in Chicago the first weekend of August, Brooklyn decided to sit up on her own and then in the same day she started crawling :-) I couldn't believe it!! Although I was bummed that Brian and Olivia weren't there to witness it, I was so excited for her.
I took this video of Brooklyn when we got home from Chicago.