Harry Styles has taken inspiration from his girlfriend's music video - by getting a battle ship image tattooed on his arm.

The One Direction star, 18, got the inking on his left arm at a tattoo parlour in Los Angeles, while girlfriend Taylor Swift and his bandmates looked on.

The tattoo is just like the one seen on Taylor's love interest in her music video for I Knew You Were Trouble, The Sun reported.

The newspaper said the star has more than 20 tattoos since turning 18 this year.

The heartthrob rolled up the sleeve of his t-shirt, featuring veteran Canadian rockers Rush, to reveal the artwork.