Los Angeles, Jul 5 (IANS): Pop star Lady Gaga reportedly bought her boyfriend, actor Taylor Kinney a crocodile skin backpack, designed and signed by renowned artist Damien Hirst for his 32nd birthday. It was worth 37,000 pounds (over $55,000).

The luxury backpack is covered with mini-versions of Hirst's spot paintings - rows of randomly coloured circles. It also comes with a gold-plated brass feet to rest it on.

"Taylor loves his backpacks so she wanted to get him a real one-of-a-kind, only 12 have been made," femalefirst.co.uk quoted a source as saying.

The 27-year-old has also said to have organised other treats, including a trip for him to see his family, as Kinney takes his birthday "really seriously".

"She's also arranged for a jet to fly them to Chicago so he can see his family. Gaga knows Taylor takes his birthday really seriously but it's always difficult for her to get him something because he doesn't like fast cars, big houses or smart suits," the source added.

The "Born This Way" hitmaker is dating "Chicago Fire" actor since last two years.