To get the scoop on what color hair Perry might be donning when she hits the red carpet at the Grammy Awards, we asked her longtime hair colorist, Rita Hazan.
"I'm kind of feeling the blue right now, so I'm hoping we're gonna be on that same page because I really think it's really hot and it's working for her," she told MTV News. "So I'm assuming that we're going to be staying with the blue for the Grammys, but you never know.
"The night before it could be a whole different story," she continued, laughing. "It depends, maybe she gets a dress she wants to match her hair to, but I feel like she's going to rock the blue and find a dress to match the hair, which I absolutely love about her."
Hazan and Perry are quite the hair-color scientists. The blue hair was only the latest "vision" the twosome has dreamed up for the always up-for-anything Perry.
"The thing with Katy, she has a feeling, she follows her gut, her instinct and she's very fashion, she's trendy, but that's really naturally who she is," Hazan said. "She doesn't try to do anything, she just does it and it works for her and I think because she's such an iconic girl, people just want to copy and do whatever she does.
"With Katy, you never know. Between her and myself we get these crazy middle-of-the-night visions," she continued. "You never know what happens. I just think watch out, something's going to happen next and I don't even know what it is."
Perry aside, Hazan thinks that everyone who attends the show is going to step up their game and go all-out when it comes to their hair. "I think that people are going to be a little bit over-the-top and extravagant," she said. "I don't think it's going to be very calm or pretty hair. I think people are going to go for it."
Chaos! Profanity! Wardrobe malfunctions! Don't miss our Grammy red-carpet live stream this Sunday, February 12, for a full three hours of mayhem, starting at 5 p.m. ET on MTV.com. And the fun doesn't end Sunday: MTV News has you covered for all the Grammy red-carpet fashion, Grammy winners and Grammy news until the hangover wears off!