"MIRROR MIRROR" AIRS ON "20/20" FRIDAY, DECEMBER 27

Want more friends, more money, even more sex? Then research says - be better looking! "20/20" delves into the naked truth of lookism, airing FRIDAY, DECEMBER 27 (10:00-11:00 p.m., ET) on ABC. Reports include:

· The Tongue Patch Diet: A Long Beach cosmetic surgeon is helping patients lose weight by sewing a patch onto their tongues. The postage stamp-sized patch is abrasive, making it so painful to eat solid foods, that the patient can only consume liquids. Promising to help shed 20 pounds in 30 days, Dr. Nikolas Chugay gives ABC News Correspondent Cecilia Vega exclusive access to his clinic, the only place in the United States where the tongue patch is available. "20/20" also follows two patients through the process from beginning to end and reveals their provocative before-and-after pictures. (OAD: 8/2/13)

· Too Attractive to Work: After working as a dental assistant for 10 years, 32 year-old Melissa Nelson was fired by her dentist boss for being too attractive. Dr. James Knight, who is married, said that he felt Ms. Nelson's beauty was simply too tempting and presented a threat to his marriage. But Nelson was not about to take this reverse form of beauty bias lying down. She sued Knight for gender discrimination. The all-male Iowa Supreme Court would make a surprising decision, not once, but twice. Paula Faris reports. (OAD: 8/2/13)

· "A Year Without Mirrors": In a world obsessed with image, Kjerstin Gruys has decided to avoid looking into the mirror not for a day, not for a month, but for an entire year. Six months before her wedding, in an attempt to avoid fixating on perfect, Kjerstin launched her project, "A Year Without Mirrors." Robin Roberts reports. (OAD: 8/15/12)

· Charity Angels: The old adage 'sex sells' apparently holds true even for charity fundraising, as Los Angeles-based company Charity Angels only hires attractive women in a bid to get wealthy men to part with their cash at philanthropic events -- from golf tournaments to black tie galas and cancer fundraisers. Chris Connelly reports. (OAD: 8/2/13)

David Sloan is senior executive producer of "20/20."