BEIJING, Dec. 9 (Xinhuanet) -- The American pop star Lady Gaga creatively played a bathtub piano while sitting on a toilet as her piano chair during her X factor performance semi-final in London, according to news reports on Wednesday.

    Performing on the British ITV show Sunday, Lady Gaga wore a huge gothic costume which featured wings and horns.

    Climbing out of a huge bath, which filled with scary looking dancers, she sang her pop song "Bad Romance" while dancing enthusiastically. Surprisingly, Lady Gaga even played piano while she was sitting on a toilet.

Britain's Queen Elizabeth (L) meets American singer Lady Gaga following the Royal Variety Performance in Blackpool December 7, 2009

    Asked what advice she had for the remaining contestants, she said, "Be yourself and don't let anyone tell you that you can't achieve your dreams."

    Although Gaga's clothes were outlandish in most of the time, she had observed the royal protocol of wearing a full-length dress and curtseying in front of Her Majesty the Queen.