The 30-year-old singer said that performers should be comfortable in front of their audience and not rely on outlandish ensembles to put on a good show, reported People magazine online.
"I don't want to wear no stiletto. I am not a model and I am not Beyonce. It is not going to happen. This is such a funny industry. Sometimes I turn on awards shows and pop stars are wearing alien costumes. I'm like, 'That's cool for you but ain't no way in hell someone is going to convince me to wear that on stage," she said.
Clarkson also said that the music industry puts too much pressure on artists to conform.
"Not only can the music be formulaic, but the attire can be formulaic. Just like music, with style there is room for everything and it might not be everyone's cup of tea but it is that person's thing," she added.