Katheryn Elizabeth Hudson is Katy Perrys full name
That is crazy, I wonder why celebrities change their names like that.  She is a really good singer.  How many hits has she had?
shes had quite a few, katy perry is very popular
She is.  How many records has she put out?
katy perry has at  least 7 huge hit albums
Amazing!  How many records has she sold?
katy perry has sold over 100 million records and singles
That is a lot of money!