Lady Gaga (above in Prada) will be dressed by Armani and Prada for the rest of her 2010 tour. According to WWD:

Lady Gaga has tapped two fashion houses — Armani and Prada — to help outfit her for the overseas leg of her Monster Ball tour, which began last week in Manchester. Giorgio Armani, who dressed the singer for the Grammys, fashioned four separate looks, including two sparkly bodysuits, an iridescent mini-dress and a floor-length black patent trench coat. (The designer also created custom shoes and sunglasses to go with each ensemble.)

Prada, meanwhile, whipped up an 18th century-inspired hoop dress made of camel-colored ciré (a shiny plastic jersey blend.)

The 2 looks from Armani (which are my favorite):