Katy Perry, Christina Aguilera, and Lea Michele Star in the Latest Fashion Collision (VIDEO)
What do Christina Aguilera, Katy Perry, Justin Bieber, and Lea Michele all have in common?
They're just some of music's big stars involved in the latest installment of Fashion Collision -- where music and fashion meet.
Each week, we'll be rounding up your favorite music-makers at the intersection of music and style to bring you the lowdown on their fashion choices -- the good, the bad, and the ugly.
And last week, we saw all three from some of music's hottest talent, including on-again-off-again Mayer and Perry, Glee's musically-inclined Michele, and more.
For a look at which stars hit the right note -- and which were off-pitch, watch this week's episode.
Who do you think were the week's style rock stars? Tell us your picks.
Catch another episode of Fashion Collision in the video below.