Blue-haired Katy Perry catches a departing flight out of LAX airport on Monday (January 16) in Los Angeles.

The 27-year-old newly single pop star wore a chic Missoni dress.

PHOTOS: Check out the latest pics ofKaty Perry

Katy just tweeted a new version of her latest single!

"Special surprise 4U on iTunes!,” she wrote. "The amazing Jon Brion & I put a little ACOUSTIC spin on #the1thatgotaway. Hope you like!” Listen to the acoustic version of "The One That Got Away” at Facebook.com!

FYI: Katy is wearing custom yarn wrapped sunglasses by Knitta from the Artist Series collection available exclusively at Sunglass Hut.