Model-turned-actress Cara Delevingne decided to use an innovative way to keep paparazzi at bay -- water guns!

She came up with the idea after a photographer attempted to take inappropriate images of her.

"Some disgusting so-called 'human' with a camera tried to take a picture up my skirt. Welcome home. Any suggestions? Eggs," the 23-year-old had posted on her Twitter page after the incident.

And then, after just a few days, Delevingne seized the opportunity and headed out with girlfriend St. Vincent here on Friday, with water pistols to attack anyone who was trying to invade their privacy.

Announcing her victory, Delevingne shared an image of her attack with her followers on photo-sharing website, Instagram, captioning it as : `Pay back`.