Recently single Katy Perry stepped out in an unusual outfit at the U-Express Live 2014 press conference in Japan. The singer, who was joined by Korean pop group Girls’ Generation, looked like she was in the mood for a Big Mac.

However, we are going to give the girl some slack as she has been having a pretty busy time lately, delivering her friend’s baby and dealing with her split from John Mayer.

It seemed like John was far from her mind though as The Roar singer was all smiles at the event. According to HollywoodLife, the reason she and John split was because he broke a promise.

A source explained: “The last time they broke up — John won her back by making a ton of promises — he was going to put her first, but now he’s falling back into his old patterns.”

The source added: “Katy isn’t willing to put up with any shenanigans. She’s devastated but she felt she had to do this to take care of herself.”