Justin Bieber met his wax model

Yea,there is a waxwork model of Justin Bieber in the Madame Tussaudes museum in London.
OMG! He is so damn popular ,I knw.
But tats nt the point.
When  I first saw the photo, I've been wondering what's inside his pocket.why it look so big?
seems like a lot of cash is inside.XD
hehe, I knw I'm weird. 
Here is the photo>>>>>