Amanda Preisinger is anxious about her daughter’s impending 13th birthday party. Not for the usual reasons related to a house full of clamorous preteen children, but because it’s the first time that she will debut her new face to friends and extended family. “Obviously I’m going to tell everyone as they come in, ‘Just so you know, this is not how I look,’” says the 30-year-old real estate agent from south Florida.
How she looks is, well, a little startling – her face swollen…

