"Jennifer is a clean-freak and doesn't like putting her bum on any toilet unless it's on her own custom-made seat," a source told The Sun. "It's a cover to fit any loo."
Jennifer's rider demands in the past have included room temperature Evian water, white lilies and roses with grapefruit and lime blossom candles by Jo Malone. Plus if she arrives early she demands a full breakfast with scrambled eggs, bacon, potatoes, pancakes, toast (white bread) and coffee (regular and decaf)!
Check out other bizarre rock-star rider demands in our slideshow: