It has been quite some time since we've heard a new single from either Katy Perry or Lady Gaga, but this week both of them have dropped highly anticipated singles on us.

After taking a little time off, Katy Perry is back with 'Roar', and boy is it fierce. The question is, is it the single that all the Katy Cats have been waiting for?

Lady Gaga is also back after not releasing a single since 2011. Gaga has spent most of her downtime touring and recovering from hip surgery. She's coming back in a big way with her much anticipated 'ARTPOP' album, and the first single demands your 'Applause.'

So which one reigns supreme?

Katy Perry:

Lady Gaga: