Katy Perry

Katy Perry and her fiance Orlando Bloom are parents to three-year-old Daisy.

The 39-year-old pop star says her daughter has taught her the true meaning of love.

Speaking to Variety, she said: "I never truly knew about unconditional love. Obviously my mother has that for me, but I didn't really experience it in the first person until I had my child - and that was just a whole other level. It's just the biggest life change ever. You're responsible for someone's well-being who can't even hold their head up. It's a real shift, and you become not No. 1 on the call sheet."