Gaga has put on 13kgs Thu-20-Sep-12 17:01 Share this Lady Gaga has rapidly put on the pounds through what she is describing as the ‘drunk diet’."Gaga appears to have gained at least 30 pounds (13.6kg)," said a source. Gaga herself has said in the past…"I like to drink whiskey and stuff while I am working," she told radio station Sirius FM, admitting that she often hits the gym with a hangover. It’s a huge change from the Gaga we knew at the beginning of the year. A tweet from her during this period reads, "Just killed back-to-back spin classes. Eating a salad dreaming of a cheeseburger. Pop singers don't eat. I was born this way." By Megan Slovak You May Also Like Lady Gaga gets naked for the cover of Candy magazine What Lady Gaga does with her Michael Jackson memorabilia Who is the highest paid musician this year? Become a fan of The Edge on Facebook and on Twitter .