Lady Gaga on struggles with eating disorders

(CNN) - Lady Gaga is firing back at tabloid attacks on her 25-pound weight gain.

The singer posted photos of herself wearing only a bra and panties on her website Tuesday. Gaga says she's battled with anorexia and bulimia since she was 15.

Now, she's celebrating her so-called curvy flaws in a blog entitled "A Body Revolution 2013." On the site, Lady Gaga invites fans to post their own photos in an effort to "make their flaws famous."