The Great Hall was, as usual, buzzing with its usual morning chatter while students prepared for another day of class and gorged themselves on sausage and Pumpkin Juice. Everyone was excited to leave for the Christmas holiday in a few weeks.

Which, of course, meant that Ron and Harry were clutching their heads in pain.

"Why," moaned Harry, "WHY did we stay up all night playing Exploding Snap?"

"Don't question, just eat," commanded Ron, shoveling eggs into his mouth. "Blimey, Hermione, didn't sleep a wink, did you?"

Hermione, who was looking crisp, clean, and wide awake, rolled her eyes at Ron. "If you'd been more responsible with your time, Ron, you could have studied for your Charms exam instead of staying up all night playing Exploding Snap!"

"Hermione, I take pride in my work ethic. I am a patient man, and I don't push myself too hard. Besides, the Charms exam is after holiday," Ron said.

Suddenly Luna zipped in out of nowhere, sitting down next to Hermione at the Gryffindor table with her arms full to the brim with calendars. "Morning, Hermione, your hair looks very pretty today. Did you use that Zumzanger shampoo I got you for Christmas?"

Hermione ignored the question. "Are those our calendars?"

"What? Ooooooh, yes!" Luna said happily. "Fred and George finished them up and they look marvelous! George says we should sell them now, as presents for the holiday. That way, everyone can start on January together. Fred put a charm on them so you can only look at the month you're currently in, and you can't sneak a peek ahead." Luna looked over to a sleepy Neville. "You'll buy one, won't you, Neville? The girls made them to sell to support Professor Babbling's wedding!"

"Er, sure, Luna," Neville mumbled, fumbling for his wallet. "How much are they?"

"20 galleons."

"20 galleons for a calendar? Luna, I'm not made of gold!"

"Please, Neville? We really want to raise a lot of money so Babbling can have a great wedding! It's for a good cause, and you won't be disappointed!"

Neville reluctantly forked over 20 galleons and forlornly took a calendar from Luna, who gave Hermione a pile to sell and skipped away.

Harry nodded to Hermione's pile. "What are those, anyway?"

"Calendars, like Luna said. You'll be buying them, of course," Hermione said bossily, handing two calendars over to Ron and Harry. "40 galleons, then."

"Hermione, we don't need a calendar, and we're certainly not paying 20 galleons for one! We can buy a gift for Babbling," Harry tried to compromise.

"Harry, please!" Hermione said, desperate. "N-no one else is going to buy one from me, and we really need to sell these!"

Ron tried, in vain, to flip through the calendar, but it was Charmed tightly shut, and only the cover was visible. In pink glittery writing, it said, "Girls of Hogwarts Calendar".

"What kind of calendar is this, anyway?" Ron said while trying to pry it open.

Hermione sighed. "It's a sort of-girl calendar. Where girl students pose for each month in...you know...sexy poses."

Ron choked into his porridge. "What?"

"All of us girls wanted to fundraise for her, and Fred and George thought we'd sell a lot of these calendars. Boys, please, I promise you won't be disappointed! There are really pretty girls in there-Harry, Cho is January!"

Harry turned bright red at the mention of his ex-girlfriend's name. "Is that so?"

"20 galleons, each. And some of the sexiest poses you've ever seen, I swear. Please!"

Harry reluctantly handed over money, to Hermione, and Ron followed suit. Hermione left to continue walking around the Great Hall to sell calendars with the other girls.

"I'm throwing mine away," Harry said to Ron. "What about you?"

"I'm giving mine to Dobby as a present. Anything with the girls in our school involved-it can't be sexy. Especially something with my sister, or with Hermione. I mean, her definition of sexy is very skewed-probably Victor Krum reading two books at once or something."

"Oh, little brother, how wrong you are-I'd have to say Hermione's pose is probably one of the greatest of the bunch!" Fred said, sliding in the seat next to Ron. "You're talking to a principal director and photographer of this calendar, and let me tell you, you have more than 20 galleons' worth on your hands."

"You don't have to advertise, I already bought one, Fred!" Ron grumbled.

"Be happy you did-I got fifteen anonymous orders for calendars today." Fred grinned. "These are going to be huge, wait and see. By the end of the day we'll be sold out, and you'll be glad you have one."