The 'Firework' hitmaker's creations for Eyelure will reach stores in February and the company revealed she was very hands on with the collaboration, which mimics her "personal style".
A statement says: "As a false lash lover herself, Katy had a very clear idea of what she wanted to achieve and was involved in every step of the design process.
"We were keen to create a range of lashes that were a direct extension of her own personal style."
This isn't Katy's first venture outside of pop, the busy star has also created two perfumes and became the global ambassador for hair styling brand ghd last year.
Paul Stoneham, ghd Chief Executive Officer explained: "Katy is the epitome of modern fashion and styling. Her unique, ever changing looks are the envy of style devotees around the world. Katy completely embodies ghd's spirit of female transformation and empowerment, as she is seen as a cutting edge style icon unafraid to push fashion and beauty boundaries. Sassy, stylish and sexy, Katy is the perfect partner for ghd."