Backwards Day

Eve has really enjoyed the freedom of being able to get herself dressed and undressed.  She worked hard on doing her shirt and refuses any help.  The other day she came out with both her pants and shirt backwards.  I told her she needed to turn around her clothes and after giving it a few seconds of thought, she declared it Backwards Day.  How could I not let her have a special backwards day, except I did tell her it wouldn't work with her shoes.  She seemed so happy to tell everyone why she was dressed so differently and since then she also had a sock missmatch day too.