Positive or negative relationships between siblings are often formed early in life. It is important that they are given many opportunities to bond and become friends.

Little girls like to have tea parties. They like to pretend to be grown up and proper.
Encourage your kids toward imaginary play. It is good for them.

Children may change dramatically from one December to the next. Why not take pictures of a similar pose each Christmas, to document the growth. A Santa hat is one pick of costume that adds charm and identification of the season.