Not sure what you're asking 
the name of the character or the real person
Here are the synopsis' of the two episodes I mentioned. I don't know if the photographer (Samantha's nude) is revealed.
I'm not even sure either of these is the episode in question. Why do you NEED to know this? More information may help."The Power of Female Sex" Season 1
Carrie goes on a date with a gorgeous French architect who shows his thanks with a thousand dollars; a famous painter uses Charlotte as one of his models; Skipper becomes sexually obsessed with Miranda.
"The Real Me" Season 4
Carrie faces a bit of an identity crisis when she's asked to be in a big fashion charity show featuring both models and real people. Samantha, on the other hand, has no problem baring her body beautiful, and decides to have nude photographs taken, insisting they're for herself, not for men. Utterly unaware of her sex appeal, Miranda is shocked when Dave, a guy from Crunch gym, tells her she's sexy and asks her out.
Carrie realizes we can see our friends perfectly, but we can't seem to see ourselves clearly. After some convincing from her friends - and when she finds out she can keep the outfit - Carrie decides to be a "model." Meanwhile, Charlotte discovers that she has "vulvodynia" and that she needs to take anti-depressants - not for her mind but for her vagina. The girls are surprised when Charlotte reveals that she's never looked at herself up-close because she finds herself ugly down there. Miranda's first date with Dave is a success and she starts enjoying feeling sexy. However, when she exhibits her self-confidence on their second date, Dave doesn't respond. Samantha brings in her nude photo to be framed and is dismayed when the framer doesn't react to her body.
On the night of the fashion show, Carrie is informed there's been a wardrobe change and she has to wear a tiny pair of jeweled underwear. She freaks, but all done up and looking fabulous, Samantha assures her that she is a model. Carrie starts her walk down the runway only to fall flat on her face. Faced with a choice, Carrie gets back up and finishes her catwalk to cheers. Her act of bravery inspires the girls. Miranda confronts Dave about why he hasn't called her and finds out he thinks she's full of herself. Samantha's night is made when a take-out delivery guy sees her photo and comments on her "nice ass," and Charlotte grabs a mirror and takes a good, hard look.
If you want to find out more about vulvodynia (the condition Charlotte is diagnosed with in this episode), visit the National Vulvodynia Association at
www.nva.org.
