The singer admits she chooses to sleep in the confines of a tour bus rather than relax in five-star luxury when she's on the road - because she can't bear to use a hotel room someone else has slept in.

Pickler says, "I don't want to sleep on somebody else's mattress, so even five-star hotels are horrid to me. I like sitting on my own toilet that no one else has sat on."

Source: WENN