Is there any celebrity who refuses to pose naked for PETA?</p><p>The latest is 19-year-old "Twilight" actress <b>Christian Serratos</b>, who plays <b>Kristen Stewart</b>'s "norm" friend Angela.</p><p>Coincidentally - or not - her ad debuts in the days running up to the huge Nov. 20 opening of "The Twilight Saga: New Moon."</p><p>She'd obviously rather go naked than wear (werewolf) fur.</p><p>In other "Twilight" news today, the woman who started this whole phenomenon - "Twilight" author Stephanie Meyer - is scheduled to do a rare interview with Oprah Winfrey on Friday.</p><p>"Since I'm only doing one interview, better make it really, really big," Meyer wrote on her blog.</p><p>| Lisa Gutierrez