New Baby time in the nursery.

Anna was legitimately intrigued with what Elsa had in mind for them.

While she loved her sister dearly, Elsa did not have that many ideas when it came to down time. Her favorite hobby was geometry, so it isn’t that hard to comprehend the idea that Anna thought of all of the fun things for them to do.

Elsa led them to a far-off, unused corner of the castle on the third floor, normally reserved for guestrooms and storing things. On the door was a big lock that Anna has never seen before, Elsa producing the key to it from her person. Elsa led Anna into the room as she closed it behind her, making sure no one could interrupt them. Anna was confused.

The room was a royal nursery, one reserved for any babies and toddler that guests would sometime bring with them. The walls painted with pastel pinks and yellows, a toy chest full of baby toys and stuffed animals unused diapers and changing supplies.

“…why are we here Elsa?”

“I wanted the perfect spot to play with my baby sister.” Anna looked back at Elsa, trying to see if she was being serious. She stared at Elsa for five solid seconds, all she could say being a mix between a “huh” and a “what?” Elsa gave her a smug smile before it melted into a sincere one.

“Anna, I know about it.”

“About what?”

Elsa reached into a pocket in her dress and pulled out what was revealed to be Anna’s pacifier.

“I, uh… what is that? I’ve never seen--” Anna sputtered, trying and failing to bail.

“Anna, I saw you. The other day.”

Anna’s whole body was turning red out of sheer embarrassment. She was frozen in place, this time by Elsa’s words than Elsa’s magic.

“Anna, it’s okay,” said Elsa, realizing that Anna was not going to say anything, placing her arms around Anna in a hug. “I understand. You feel like you need to spend some time… like that… so that you don’t need to feel burdened by your responsibilities. I spend all of my time working and I know it must intimidate you and--”

“No,” said Anna. “I don’t wear them because I’m afraid.” Elsa released her sister from their hug and saw Anna. She was still blushing, but she looked into her sisters eyes. “I wear them because… I wore them when you and I… when you and I were best friends when we were younger.”

Anna placed a hand over her other arm, trying not to look at Elsa in the eye. “They make me feel safe and secure, like when I played in the snow with you…”

“Oh Anna,” said Elsa as she pulled Anna into another hug. “I know I haven’t been there for you all of this time, but I want to make it up to you.”

“You do?”

“Yes, I do.” Elsa broke the hug again and then put her hands on her hips. “Now, I don’t think my baby sister is dressed appropriately.”

“What? B-but…”

“I told the guards and servants not to disturb us for the rest of the day. It’s just you, me and this room.” She suddenly place a hand on Anna’s waist, causing Anna to jump away in shock.

“ELSA!”

“My baby girl hasn’t wet today, but we will need to be safe.” She hinted at the table in the corner of the room, which Anna only now realized was a changing table. Anna complied, realizing that Elsa would not be backing down from this. Elsa hiked Anna’s skirt up, Anna covering her face with the skirt, ashamed by Elsa seeing her underwear. Elsa pulled down her panties, revealing her half-naked body to her sister.

“Don’t worry baby. This isn’t the first time I’ve done this,” said Elsa, referring to back when Anna really was a baby, Elsa sometimes helping her parents and nurses take care of her little sister.

She took out a wet-wipe and proceeded to wipe Anna’s diaper area.

“AH! THAT’S COLD!”

From the shelf next to the table, Elsa pulled out a fresh baby diaper, the front covered in cute little illustration of ducklings. She undid it, placed it under her butt, powdering her and strapping it onto her sister.

“Up,” said Elsa, as Anna sat up, amazed with how comfy the diaper was.

“Um, Elsa, why are there diapers in my size in the nursery?” Asked Anna.

“I had a few shipped in a few days ago,” answered Elsa.

“And no one thought that was weird?”

“Asking for adult-sized diapers is normal when living snowmen roam the halls.”

Anna and Elsa gave a good laugh, Anna finally starting to relax.

“Now all we need is to complete the look.”

Elsa went to the closet in the room and pulled out what looked like a spring-green dress a size or two too small, the kind of dress a toddler would wear. Anna laughed at the absurd little dress, reasoning that Elsa got it in the same place she got the diapers.

Elsa helped her out of her dress, blushing as she was wearing nothing but a diaper and breast-bindings, before Elsa helped her into her new dress. The dress felt snug on her form, the skirt doing nothing to hide the diaper.

“And now for the finishing touches,” as she brought out two matching green ribbons as she tied them to the ends of her pigtails, completing the look.

“Oh, you look so adorable,” Elsa cooed.

“T-Thank you,” said Anna.

Elsa bent down and wrapped her arms around Anna, Anna wrapping her arms around Elsa’s shoulders as she picked Anna up effortlessly. Anna gave her a look.

“My magic can do more than make ice Anna. To me, you're as weightless as a snowflake, baby girl.”

In no time, Elsa sat back in the rocking chair by the window as she held Anna in her arms, the younger sister sat back and enjoyed her sister’s touch. Elsa reached over a shelf and grabbed what Anna saw to be a baby bottle filled with milk. Elsa dropped a few drops against her wrist, testing the temperature, deciding that it was too warm as she chilled the outside with her magic.

“Come here baby girl, time for your ba-ba.”

Anna made no protest as Elsa put the rubber tip of the bottle in her mouth. She relaxed as her head against Elsa’s shoulder, enjoying the rich, creamy taste of the formula Elsa made for her, the liquid filling the rest of her stomach.

Elsa put the empty bottle back on the table as she patted Anna on the back like a real baby.

“Time for a nap,” said Elsa as she got back up.

“But Elsa, I’m not tired,” said Anna, the coziness of her diaper and the comforting embrace of her sister betraying her. Elsa reached into her pocket and popped the pacifier into her mouth.

“Oh course you are baby girl. You’ve had an exciting day and you need your rest, and when you wake up, we can play for the rest of the day.”

She laid Anna into the crib (which was proportionally big enough for her like everything else) and pulled the blanket over her, kissing her on the forehead.

“I love you, baby sister.”

“I wuv youw too,” said Anna, the pacifier in her lips before she fell asleep.