Beyoncé just stopped the show before it began!
Ch-ch-check out the AH-Mazing opening performance (above)!
Katy Perry went O.G. MTV for Halloween this year!
The Firework singer and her BFF, actress Shannon Woodward, got animated as Daria Morgendorffer and Jane Lane from the classic cartoon Daria!
"@shannonwoodward You're like my… best friend."
Awww! That's so sweet! Almost too sweet… but whatevs!
We effing LOVE this pic so much! Katy Perry may have just won Halloween!
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[Image via Twitter.]