Bieber Exclusive found a photo of Katy Perry.
In this photo She's wearing a Bieber T-Shirt,
The T-Shirt is actually a print of The Rolling Stones.
She wore it along with black trousers, a blue Baseball cap which looked really cute on her alongwith a grey hoodie.
The large glares which katy wore was an attempt to keep a low profile.
while she had lunch with her friends in Hollywood.
