As the famed Whitney Houston travels throughout Europe for her comeback tour, she was seen to have gained weight.

Whitney – who had a history of drug abuse – has undoubtedly gained the weight during her “Nothing But Love” tour in Europe, according to “The Globe,” an American tabloid.

The photo of her on the left was taken on May 27 during her performance in Germany.

Whitney’s weight gain may allegedly be attributed to her steroid injection and prednisone treatments for a respiratory infection that she’s suffering.

“She’s pigging out constantly on room service and fast food and is showing no sign of slowing down,” shares a source.

Source: Showbiz Spy