Lady Gaga and Madonna’s outfits for their respective upcoming tours look set to rival one another in the high fashion stakes, the latter has Jean Paul Gaultier on hand, while Giorgio Armani has just revealed sketches of his creations for Gaga.

On April 19 Armani unveiled a string of predictably wild custom-made outfits for the songstress, including lashings of luminous PVC, a keyboard head piece and, naturally, spiky shoulders.

“Collaborating with Lady Gaga is always an exciting experience for me. I admire the way she uses fashion as a scenic element and as a means to build a character,” said Armani, who also created looks for her 2010 Monster Ball tour.

“She is an artist of many talents and great intelligence. Creating stage costumes for her is a stimulating and creative exercise.”

While Gaga’s Born This Way Ball kicks off April 27 in Seoul, Korea, Madonna starts the MDNA Tour May 29 in Tel Aviv, Israel.

The songstress confirmed that her long-time collaborator Gaultier, who came up with the iconic pieces of her 1990 Blonde Ambition tour, is helping out with costumes.