What type of music does kelly clarkson do?

Adult-contemporary pop.

But she was originally marketed as a pop musician with her debut album Thankful. With the release of her multi-platinum second album Breakaway (2004), she moved to a more pop rock-oriented style of music.

Umm...Pop basically..!!

she mostly does pop.

Pop, with a hint of Country.However, she must appreciate different genres. She is quite versatile.

Pop/Rock

Her album Thankful, sounded more pop & r&b. Breakaway & My December are more pop rock.

Since My December is her most recent album, I would consider her pop rock. I believe most people would consider her pop. So overall, I would say she sings pop music.