At the end of season 3 you seen the Stewart family leaving their old home for their new home a few miles away. Opening scene of season 4 shows the Stewart family arrive at their new home but with a few noticeable changes. Miley's hair has grown much longer, has straighten and is darker. Billy Ray's Hair style has changed, Hair color is lighter and his tee shirt is different. Jackson shirt has changed from a blue tee shirt to a green polo shirt.