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Katy Perry

Eric Berlanger / Splash News

Some people wear their heart on their sleeve. Katy Perry seems to be wearing hers on her hair.

Just hours after tweeting out congratulations for her in-absentia People's Choice Award wins, the pop superstar seemingly emerged from her self-imposed seclusion for the first time since Russell Brand filed for divorce last month.

And there was something different about her...oh, yeah: blue hair!

Katy's tresses have been on quite the transformation in the past year, going from black to pink to blond to pinky-blond to lavender, so it was probably only a matter of time before she returned to her blue hue.

In full makeup and wearing a star-spangled Adidas tracksuit, Katy graciously posed for a snap with fan Eric Berlanga, who purportedly caught up with the star in Santa Barbara, Calif., where she was leaving the set of a commercial for the sportswear company.

And while her hair was blue, her mood was reportedly anything but.

Berlanga told The Sun that Perry "was great, really nice, she seemed happy." And apparently had quite a good memory, remembering the fan from previous encounters.

"She was in a van and saw me. I waved and she made the driver of the van stop and she lowered the window and I went up to her and she put out her hand and said: 'Hey it's good to see you again!'

"I said the same and then I asked if I could take a picture with her and she said yes and got out of the van and gave me a hug and told me I smell good, then we took the two pictures."

Not exactly fireworks, but it'll do. Welcome back, Katy—here's hoping we start seeing more of you again!