Someone woke up on the wrong side of the bed!

Katy Perry spent her Sunday shopping for vintage wares at Sielan in Los Angeles, and the singer decided to flip the middle finger as she made her way to her Tesla after her spending spree.

You would think the songstress would be in a better mood, considering all the amazing things happening with her career lately! The brunette beauty just scored five American Music Award nominations, and it was confirmed last week that the pop princess will be performing the Superbowl Halftime show this coming February.

We bet if she had a man in her life, she would turn that frown upside down!