Hannah Montana Season 1 Episode 26
Jackson is tired of having a little sister that always needs him to drive her around. So, for the day, Jackson and Miley make a bet that Miley can't handle the niece next door for a whole day.
Title: Bad Moose Rising
Jackson arranges for Miley to learn what it's like to be the older sibling by having her babysit Dontzig's bratty niece; Robby gets over a cold with help from Roxy and her rather odd home remedies.