ops on the red carpet.And this year's star-studded bash in Los Angeles didn't disappoint with stars including Beyonce Knowles, Lady GaGa, Pink and Taylor Swift making an impression - both good and bad - as they arrived at the bash.Lady GaGa, who opened the awards with a performance of her mega-hit Poker Face, wore a jaw-dropping, celestial Armani Prive lilac gown with bejewelled platform heels.She