Katy Perry vs. Lady Gaga: The Singles
Signature videos: Lady Gaga's "Bad Romance" vs. Katy Perry's "California Gurls"
Lady Gaga's "Bad Romance" video launched a thousand YouTube parodies, and Katy Perry's Candyland-themed "California Gurls" made confectioners' bras A Thing. Each singer has an iconic video, and these are it, and they have the chart stats to prove it.
- Katie Hasty