Demi Lovato and "
Glee" star
Kevin McHale hosted the 2012 Teen Choice Awards on Sunday, July 22 on Fox, which brought out a bevy of adolescent icons -- the leading "
Twilight" trio and
Justin Bieber included -- and screaming teens. While ABC Family's "
Pretty Little Liars" and The CW's "
The Vampire Diaries" dominated the television categories, "
Twilight" and "
The Hunger Games" took over in the big screen choices and
Justin Bieber and Taylor ...