Plus-size model Tess Holliday couldn't be more thrilled to be on the October cover of Cosmopolitan U.K. "I'm literally a COSMO GIRL!!" she posted on Twitter. "Can't believe I'm saying that! If I saw a body like mine on this magazine when I was a young girl, it would have changed my life." But not everyone is happy, as TV personality Piers Morgan tweeted the cover is "just as dangerous & misguided as celebrating size zero models." Holliday fired back at the criticism.