They are so Rock N' Roll!!!!
Avril Lavigne, Hilary Duff and their two boyfriends tried too hard to be totally cool while attending an April Fool's party. The funny thing is the party was actually held on April 2nd. You see they were the fools at the party only they didn't know it.
Oh and in the last picture...they tried up their cool quotient by adding an Asian guy. Everyone knows Asians are the coolest shit ever.