Singer adds a series of extra dates on her Monster Ball jaunt
Singer dubs law 'against all that we stand for as Americans'
Eminem, Kings Of Leon and Muse also get nods
Singer continues her campaign against controversial law
Singer says she has a'really big rock and roll hit' for new album which will fill the gap
She also sings a snippet of a new song during speech
Plus Kanye West and Taylor Swift both return to the awards following 2009 bust-up
Singer thanks her fans for crowning her 'Twitter queen'
Florence + The Machine, MGMT, Gorillaz also nominated
Teen singer overtakes 'Bad Romance' with his 'Baby' single