London, Feb 12 (IANS) Pop star Lady Gaga has gone topless, and wrapped a clear plastic sheet around her, for a poster to promote her Born This Way Ball world tour.

The only cover up underneath the transparent wrap is a pair of lace-up platform boots, and she has not let go of a hat, reports thesun.co.uk.

The 25-year-old unveiled the artwork for the forthcoming tour earlier this week, showing a ghostly, gothic face over a medieval castle.

She revealed the first batch of dates for the shows, which will kick off in Soeul, South Korea, April 27, and run into 2013.

"The Born This Way Ball will perform 110 shows around the world," tweeted Gaga.

The "Poker Face" singer admits she feels worn out after working on arranging props for the show.

"Been working like a crazy bitch all day. Need to smoke a joint or something, or maybe just a good punch in the face. PROPS PROPS PROPS," she had tweeted.

Gaga's last tour, Monster Ball, stretched from 2009 to 2011, and was a huge hit.

She played to 2.5 million fans over 200 dates and grossed a massive 143 million pounds.