This chapter is based on a suggestion from Basmathgirl: The outfit Donna would choose to "surprise" the Doctor on Christmas morning with (okay, I admit it, my mind went straight to black stockings, high heels, and a short Santa costume).

I hope you don't mind that I changed it from morning to night! :)

Warning for a more adult-ish rated chapter.

The Doctor sighed as he closed the picture book and tucked it under his arm. The boys were fast asleep in their beds, exhausted from the buildup to Christmas and a day spent playing with new toys and visiting Sylvia and Wilf.

He pressed a kiss to James' cheek, and then to Alan's, whispering wishes for sweet dreams to each of them. He cast one more glance around their bedroom, and then sat the book down and turned off the light.

As he walked down the corridor to the bedroom that he shared with Donna, he yawned, feeling pretty tired himself. It had been a long day, and he would be lying if he said their three year old twins weren't handfuls even on less exciting days. He stepped inside the bedroom and was surprised to find the bed empty.

"Donna?" he called.

"I'm in the ensuite," she called back. "Don't come in!"

He frowned at the note of annoyance in her voice. "Is everything okay in there?"

"Fine. I'll be out in a minute, just as soon as I'm ready." There was a heavy sigh. "Hang on. How many buttons..."

Curious, he went to the bathroom door and pressed his ear against the thin wood. More breathy grunts and the rustling of fabric. He was just about to open the door, when the handle turned and the door opened just a crack.

"Back up," Donna hissed through the crack. "Go sit on the bed."

"What are you-"

"Go!"

"Okay, okay." He turned and obediently sat on the foot of the bed, wondering what in the world was wrong. "Donna? What's going on?"

"Are you ready for your extra special Christmas present, Spaceman?" she asked, in a low, husky voice.

What kind of present was she hiding in the bathroom? "Um…" He shrugged despite knowing that she couldn't see him. "Sure, okay."

The door opened more and Donna stepped out, revealing herself in a very, very skimpy Santa costume. The red and white dress barely skimmed the top of her thighs, while the bodice strained to contain her full breasts. Her long legs were covered by sheer black thigh-high stockings, and when she took a step towards him, he noticed the black high heels that gave a few extra inches of height.

She walked to him slowly, her hips swaying in the most alluring way. He found himself unable to even blink as she stopped in front of him. His lips suddenly felt dry, and his tongue darted out to lick them.

"Do you like what you see?" Donna asked, and despite the sultry tone to her voice, he heard the slight waver of nervousness beneath it.

They usually didn't do things like this. Donna trusted him enough to show him her body without the shyness and shame that she had suffered at the beginning of their relationship, but she had admitted that she thought lingerie never quite fit her right. He could see no such problems with her Santa costume, unless you counted her barely-contained, heaving chest.

"Doctor?" Now the sultry tone was gone.

He really needed to say something, but he was pretty sure he would drool if he opened his mouth. He reached for her instead, drawing her down to straddle his lap. It was quickly revealed to him that she wasn't wearing knickers, and his breath hitched. "D-Donna," he stammered, as he stared openly, his hands resting on her full hips.

"I'll take that as a yes," she murmured, and leaned forward so that her breasts pressed against his chest. "Have you been a good boy this year, Doctor?"

He swallowed thickly. "I think you'd better answer that."

She gently tipped his chin up so he would look at her face. "I think you've been a very good boy." She pressed a hot kiss to his lips, sucking gently on his bottom lip before she pulled away to smile at him. She shifted on his lap, and he let out an involuntary groan as a bolt of pure pleasure shot through him. "Perhaps you'd like to get out of that suit?" she suggested.

"Mmm," he agreed, but he frowned when she moved to slide off of him. He wanted to pull her back and hold her close, but then he saw how flushed her skin was, and how her pupils were dilated, and he suddenly didn't want to drag it out anymore. He stood and began removing his clothes with Donna's help. Why did he wear so many layers again?

"And I thought this costume had a lot of buttons," Donna teased, as she worked on his Oxford shirt.

"Yeah, yeah," he grumbled, as he slid out of his trousers and then his boxers. He removed his t-shirt and undershirt together in one quick movement, and then he grabbed hold of Donna, pulling her down onto the bed with him in a fit of giggles.

"Eager, aren't you?" she said, as she curled against his side.

"Well, it would be awfully rude of me not to unwrap my special present promptly, don't you think?" He winked as he shifted to touch her again, his hearts pounding in his chest. This was definitely the best Christmas present that he'd ever received, and he was going to savor every moment.