Singing sensations Katy Perry & Avril Lavigne both have unique styles that contrast one another.

Now, we can see if their tastes in musical talent are different a well.

Both singers have signed on to be guest judges on American Idol when the reality show hits Los Angeles. LA will be idols final stop on their nationwide search for the next Kelly Clarkson, or Carrie Underwood, or…..Clay Aiken?

Tune into Idol to see what we end up with.