The 26-year-old singer said that the release of her latest album Teenage Dream marked a shift in her popularity and convinced people to give her another chance.
She told MTV News, 'It's interesting to see a lot of the commentary that goes along with growth.
'People are like, 'OK, I like her' finally, or like, 'Damn, I hate to admit it, but we're on the Katy Perry train', which is really exciting, and I feel like I worked really hard for that.'
She continued, 'I knew starting with I Kissed a Girl that it might have taken a little bit longer to get everybody just on board the Katy Perry train, I guess.
'But now, I'm having so much fun and I get to be so creative and try different things and expand, and I never play it safe - in any way, really.'