The eccentric singer is terrified of evil spirits and reportedly has every hotel and tour venue scanned by a team of paranormal investigators before she will agree to stay there, according to Britain`s Grazia magazine.
The 24-year-old pop star - who has previously said she believes she is the reincarnated spirit of her dead aunt - has also allegedly splashed out £30,000 on state of the art Electro Magnetic Field meters to detect spectres.
A source said: "She believes in paranormal activity and won`t take any risks when she is on the road. It`s important to her to be safe from spirits."
Ghost-hunting equipment is not Gaga`s only extravagant purchase.
The `Alejandro` singer - who has reportedly lost $4 million on her sold out `Monster Ball Tour` - spent £40,000 to hire a NASA trained chemist.
The flamboyant beauty - who is well known for her love of tea - splashed out the huge sum in order to discover a non-hot substance that would let steam out from a teacup-shaped dress.
Gaga has also spent £500,000 on private jets to transport her set equipment and wardrobe on the `Monster Ball Tour`, £15,000 on hand crafted lace from Eastern Europe and £52,000 on a bath tub for her performance on UK TV talent show `The X Factor` last year.
She is reportedly eyeing up a British castle for her next purchase.