Lady Gaga in Amsterdam on September 20, 2012. Credit: BAUER-GRIFFIN.COM

Lady Gaga's revealing costumes during her Amsterdam tour this week have gotten some attention -- but not for the clothes themselves.

In a new interview with radio host Elvis Duran, the 26-year-old singer admits she's recently gained some weight.

"I'm dieting right now, because I gained, like, 25 pounds," Gaga told the radio show (via Huffington Post) before she headed on tour. "And you know I really don't feel bad about it, not even for a second. I have to be on such a strict diet constantly. It's hard because it's a quite vigorous show, so I tend to bulk up, get muscular, and I really don't like that. So I'm trying to find a new balance."

Gaga blames her dad Joe Germanotta's restaurant as the reason for her recent weight gain.

"I love eating pasta and pizza," says Gaga. "I'm a New York Italian girl. That's why I have been staying out of New York. My father opened a restaurant. It's so amazing . . . it's so freaking delicious, but I'm telling you I gain five pounds every time I go in there. So my dad wants me to eat at the restaurant, and I'm, like, I've got to go where I can drink green juice."

But some may argue that Gaga doesn't need to go on a diet.

Back in April, the "Born This Way" singer was criticized after she tweeted, "Just killed back to back spin classes. Eating a salad dreaming of a cheeseburger. Pop singers don't eat. I was born this way."

In June, Gaga's good friend Elton John expressed concern over Gaga's thin frame. She is frail, and she doesn't eat when she should, and she's a girl, and it's tougher for a girl," John told The Guardian. "She works really hard. She will be in Denmark one night and Saudi Arabia the next. I know how tiny she is and I do worry about her, yes."