Sneak Peek Photos of Glee Season 2, Episode 15: "Sexy"

Substitute Holly Holliday (Gwyneth Paltrow) fills in for the sex-ed teacher and joins forces with Will to teach the glee kids the facts of life. Meanwhile, Emma heads the Celibacy Club, leading her and Dr. Carl (John Stamos) to address personal issues.

Original Air Date: March 8, 2011, 8/7c