Looks like we have a bit more insight into how "California Gurls" stay healthy Katy Perry tweeted this photo of herself holding a large bag of vitamin supplements on Wednesday. "I'm all about that supplement & vitamin LYFE!" the singer wrote. Obviously! In the image, Perry's holding up several plastic baggies filled with supplements labeled "Dinner," "Breakfast" and what appears to simply read, "Katy Perry" - maybe that's code for "lunch"? The photo has already been retweeted over 2,700 times.