Katy Perry's boobs were so big when she was in school that she had to wear two bras.
A childhood pal of Perry told the Daily Star that the 28-year-old singer was really proud of needing to wear two bras.
"One time she changed for gym in the girl's locker room," the pal said.
The friend said that Perry was very busty and got lots of attention from the boys, which she loved.
