Visitors Part 2

One of these pictures is not like the others, one of these pictures just doesn't belong.
Can you spot the differences???
 Grandpa Ron did this same dress up stunt with glasses on my brother Arlo I hear.  I don't plan on needing specs when I get older though Grandpa.

 Grandma and Grandpa Brown with Arlo and Otis.

Never enough kisses.