Katy Perry is a healthy popstar.

The singer proved this by tweeting a picture of her carrying three zip-lock bags full of vitamins and supplements she takes three times a day.

Labelled ‘Upon Rising’, ‘Breakfast’ and ‘Dinner’, clearly Katy, 28, doesn’t do her healthy regime by half measures.

With the picture she wrote: ‘I’m all about that supplement & vitamin LYFE!’

Katy has always been vocal about her healthy diet and lifestyle, telling People magazine her typical daily menu rich with nutrients: ‘When I was on the road, I liked to have a light soup, a piece of grilled chicken and some quinoa with grilled asparagus for dinner.’

‘It was very important to eat a balanced meal and to make sure my energy was up for every two hour show.’

Katy has been hanging out with friends in the Caribbean this week, enjoying the sun from the comfort of a rubber ring.

There she showed off the results of her healthy diet plan and fitness training.