The Bunny Suit is an outfit which that causes any guards or cops that see Bob wearing this to laugh instead of chasing him. However, this is not always guaranteed so caution is advised. The Bunny suit can only "stun" one guard or cop at a time so if there are multiple, one will be "stunned" while the others are unaffected.
Also, if Bob is seen by someone, even if that person is "stunned", it will still count as detection so Bob cannot receive the "Undetected" medal if that happens.
The Bunny suit is available for purchase in the store for a cost of 1000 coins.