Type 40
"But it's bigger on the inside," Kaylee said, at once running back outside to inspect the relatively small phone box. She blinked at it in confusion, ran her hands over it. Then, she ran back inside. "What did you do to my eyes?"
River chose that moment to spout off something about time and space and the last Type 40.
"Quite right," the Doctor said. "How did you know that?"
River stared at him. "Simple. Deductive reasoning. The only possibility."
"She's... really smart," Kaylee filled in, taking her hands off her eyes.
"I'll say." The Doctor led them inside again and began tinkering with some dials. "Your eyes are just fine by the way," he said, but his words were barely heard, as Kaylee was already drooling over the TARDIS's console.
"What does this do?" she asked. "I recognise this and this, but not this. Or this. What exactly is this... ship?"
"Sexy," River filled her in.
Kaylee frowned. "What?"
The Doctor smirked. "Oh yes, she is that. Kaylee, River. Meet the TARDIS." He beamed as both girls said, "hello". "Now, who wants to go somewhere fantastic?"
Fin.