Lady Gaga Steps Out With No Pants, Teacup In London (PHOTOS, POLL)

Cheerio! Lady Gaga greeted fans in London, England, yesterday in two very distinct outfits: one classy all-white ensemble, and one ... men's dress shirt.

Gaga, who was in England to make an appearance on talent show "The X Factor," was swarmed by fans outside her hotel in the early morning, but we still got a glimpse of her outfit: a lovely white top and embellished skirt, a Remembrance Day poppy pin, blue glasses and a teacup that she clutched in her right hand.

For her actual performance on the show, the singer harnessed special effects to perform as a decapitated version of herself. Scary!

Later, Gaga appeared again, this time wearing glasses held together with tape, a white oxford shirt with a black tie, a white jacket, fishnets that revealed her thigh tattoos and what appears to be no bottoms. It reminds us a little of "Annie Hall," but with a, uh, creative Gaga twist.

The singer, who reportedly just fired her choreographer after a spat, took another fashion risk this week when she wore a vision-obscuring McQueen gown and hood at the 2011 Bambi Awards in Germany.

Check out the pics below and vote on your preferred Gaga look in our poll.