Paris Hilton's Cold Reaction to John McCain Commercial
"Miss Hilton was neither asked, nor did she give permission, for the use of her likeness in the ad, and has no further comment," her rep said in a statement.
In the campaign ad from the Republican presidential hopeful, images of Spears, Hilton and Democratic challenger Obama appear on the screen as a voiceover says, "He's the biggest celebrity in the world. But is he ready to lead?"
Spears's rep has declined to comment.