Elvis' Granddaughter Gives Big Hunk 'O Nothin'

3/18/2008 4:00 PM PDT
Her pregnant mom is suing the tabloids and her taut granny is on "Dancing with the Stars" -- but 18-year-old Elvis celebugrandkid Riley Keough wants nothing to do with either of 'em.

TMZ nailed Riley with questions about her famous family in New York last night ... all she'd talk about was borefriend Ryan Cabrera.