"Jo, you doing anything?" Sally burst into the room, brimming with enthusiasm.
"Not yet, what's up?"
"I'm going to a party right now, the dress code is Christmas themed of course, so dress appropriately!"
"Aw, I don't think I have anything..." Joanne sighed, visibly disappointed. Sally furrowed her eyebrows, but suddenly she snapped her fingers after a moment's thought.
"You have a Christmas dress and boots! Came with gloves too if I recall! Just wear that!"
"That's pretty old, it might have shrunk a bit..."
"Nonsense, it may be a couple of years old, but I'm sure it'll be fine! You'd rather stay at home tonight?"
Joanne agreed and proceeded to put on her old costume. It was a red dress lined with white fur on the edges, accessorized with a Santa hat and leather boots and gloves. The dress hugged her figure very snugly, and she just barely fit her breasts into the dress. "Still fits!" Joanne rushed after Sally as they both got in the car.
As they entered the house, Joanne attracted a lot of attention as her dress accentuated her curves and her breasts continued to strain the fabric. Her dress gradually rode higher and higher until her striped panties were visible to anyone. Sally left Joanne to get a drink, just then a woman hollered at Joanne.
"Oh my goodness! Joanne! I haven't seen you in FOREVER! How are you?!" The host waved enthusiastically at Joanne. The two began chatting away as the entire room was eyeing Joanne's straining dress, waiting for the inevitable.
"I recognize that dress, you wore it to my party back in college! I can't believe it still fits!"
"Oh it's gotten a bit smaller, but I just about squee-" Joanne proudly puffed her chest out, her dress ripping at the seams until they could hold no further! Her bare breasts popped out and bounced with considerable force!
Everybody watching yelled in unison...
MERRY CHRISTMAS!