How to Upstage Miley at the 2013 American Music Awards? Be Lady Gaga, on a Horse, of Course

If there's any star these days who's difficult to steal the spotlight from — it's the tongue-wagging, twerking, eyebrow-morphing Miley Cyrus. However at the 2013 American Music Awards, it was another celeb's turn to grab back center stage; making such a stunning entrance  that Cyrus herself admitted defeat.

That would be Lady Gaga, of course, who pre-Miley was accostumed to owning these events. Tonight, the singer arrived on scene poised on a Trojan horse (powered by two hidden humans inside), dressed in a Grecian gown...and right smack in the middle of Cyrus's red-carpet interview.