Birthdate: October 25
Hometown: Santa Barbara, California
Where You've Seen Her: We've loved pop star Katy Perry since she first burst onto the scene in 2008 singing about kissing girls and yummy Chapstick flavors. Since then, we crowned her our Hot 100 Number 1 in 2010 and swooned over her January 2011 Maxim cover. It's rumored that she'll be releasing an album soon, which will reportedly have some darker themes. The star also voices a role in The Smurfs 2, in theaters July 31st - though we'd rather see her in a real-life Smurfette costume.
Check out the 2013 Hot 100 List.
Get to know another girl, Isla Fisher.