Not photoshopp ed. 
Katy Perry rocks out to AC/DC wearing devil horns at the Grammy Awards
KIRSTEN ACUNA
FEB. 9, 2015,
If you tuned into the Grammys Sunday night, you may have noticed Katy Perry and pal, singer Ferras, sporting a pair of devil horns at the start of the awards show.
Katy Perry with singer Ferras at the 57th annual Grammy Awards.
The next time we saw Perry, the horns were noticeably gone, but many fans and viewers online were confused by the look.
What was the deal?
The horns weren't Perry's idea.
The horns went along with the AC/DC performance of "Highway to Hell" which opened the show.
Look closely and the horns say AC/DC on them.
It looks like all audience members at the Grammys had their own pair of light-up horns on their seats.
There's a good reason you didn't see the horns for the rest of the show or on other celebrities.
The Grammy show politely banned them from being worn during the rest of the awards ceremony.
A message on a prompter read, "Ladies & Gentlemen: The devil horns are yours to keep, but please put them away for the rest of the show. Thank you."
Katy Perry rocks out to AC/DC wearing devil horns at the Grammy Awards KIRSTEN ACUNA
FEB. 9, 2015,
If you tuned in
Katy Perry with singer Ferras at the 57th annual Grammy Awards.
The next time we saw Perry, the horns were noticeably gone, but many fans and viewers online were confused by the look.
What was the deal?
The horns weren't Perry's idea.
The horns went along with the AC/DC performance of "Highway to Hell" which opened the show.
Look closely and the horns say AC/DC on them.
It looks like all audience members at the Grammys had their own pair of light-up horns on their seats.
There's a good reason you didn't see the horns for the rest of the show or on other celebrities.
The Grammy show politely banned them from being worn during the rest of the awards ceremony.
A message on a prompter read, "Ladies & Gentlemen: The devil horns are yours to keep, but please put them away for the rest of the show. Thank you."