Sir Martin of Solo -
Do you have satisfactory assurance from "another forum" that this photo was indeed taken THIS New Year's Eve? If so, it would certainly knock the slats out from under mich's half-baked breast reduction theories! She looks ever so zaftig to this man's rather experienced eye!
Attractive and full of life as ever, too!
In any event, it was obviously taken at a Playboy-sponsored function - as is evidenced by the backdrop behind the bandstand. I think I even recognize her sidekick! (Though I can't remember her name.)
Let me join those who've already done so in offering my thanks for sharing and sincere wishes for a happy & healthy 2015.
- Sir Monster of the Mill
P.S.: If the copyrighted script of 3 posts ago is any indication of your writing prowess, my strong recommendation would be: Do not - under any circumstances - quit your day job! 
Dear Sir Monster of the Mill,
I have just asked the original poster of Joyce New Year's Eve picture if he can confirm its date.
I agree with you 100%!

Gosh!
I wish I was at that party!
I hope that me and Brian can meet and work with her one day soon as we are both great fans of her.
You and everyone else are most welcome and I wish you and all the other forum members a happy & healthy 2015 too!

P.S.: Well, I have lots of ideas for big boob (comic) stories, but I leave the actual writing to a professional (script)writer.

One of the female characters in these stories will be (partly) based on Joyce.

P.P.S: I just had another daydream: In a '2001 A Space Odyssey' like setting, I am travelling in the space shuttle to the big space station orbiting earth and Joyce is the stewardess, tending to my every need. As the space shuttle thingy is spinning around to match the spinning of the space station thingy, Joyce's boobs begin to grow with every full spin. And all of this on the music of 'An der schönen blauen Donau', also composed by Johann Strauss jr.

(This script is copyrighted by me!)