Does Kate Middleton have anything to worry about?  There's word Prince Harry will be planning his brother William's bachelor party.

"Harry is a rascal," one royal insider tells Rob Shuter of Popeater.com.   "He is in trouble with a capital T.  A young prince that loves to have fun and go out partying at all the cool spots in London is planning her future husband's bachelor party. Kate should be nervous!"
William's little brother has raised more than a few royal eyebrows in the past with his naughty behavior. Harry's love for a good party has never been a secret.  Harry has also been involved in many a late night scuffle with paparazzos while fleeing various London clubs.   But insiders say that is all in the past...  "Harry is determined to show William, Kate and the rest of the family that he has grown up."

Courtesy of Popeater.com