Dannielynn is One!

Today was the big day for Dannielynn Hope Marshall Birkhead, as she celebrated her first birthday in fabulous Kentucky style!

Hundreds of guests gathered at the Louisville home of Tricia Barnstable Brown -- a friend of Larry Birkhead. Guests had to surrender their cell phones before entering and sign a release form promising not to take any pictures. This party girl is exclusive!

The bash was not pint-sized like its honoree -- with a hot-air balloon shaped like a birthday cake in the front yard, along with a huge castle, bubble machines and a white carriage.