there's mom carol, and dad michael. they shook hands and smiled at the reporters, but they said nothing. they went in the hospital to visit their family. in many ways kate middleton has been compared to the mother-in-law she will never get to meeting right down to her pregnancy. kate bolduan takes a look. >> reporter: no doubt many were flashing back to june of 1982 when princess diana introduced the world to baby prince william for the first time. when this framed birth announcement was placed on a gilded easel, their tiny new addition became part of a family full of long-standing traditions, like that easel. it's the same one that boar the announcement of prince william 31 years ago, and the hospital. dozens of news organizations have been staked outside the lindo wing for a week. >> the same place princess diana