Caroline's Christmas is a magazine story.
One frosty Christmas Eve, Caroline was motoring along towards the main station. She was driving more carefully than usual as the road was very icy. As she pulled into the car park, she saw a big Christmas tree covered in lights. Just then, Thomas puffed in with the post train and Tom Tipper arrived in his post van. The van was travelling too fast and its wheels skid on the icy road. The van bumped against the kerb, causing the exhaust pipe to fall off. Tom Tipper was worried; how could he deliver his important Christmas post now? Luckily, Caroline offers to take him. Tom was only too grateful for Caroline's help and the sacks of mail were loaded into the vintage car. Caroline set off with Tom on her very first Christmas post round.
Meanwhile, at the station, the staff were putting up decorations for their Christmas party. Thomas tells the stationmaster that Caroline deserves a treat for being so helpful. The stationmaster offers Thomas a box of spare decorative lights and the tank engine knows just what to do with them.
By the time Caroline comes back, the staff's party was in full swing. Thomas tells the car that he has something very special for her to wear. Caroline was delighted when the stationmaster decorated her with the spare set of lights. Caroline thinks she is as pretty as the Christmas tree.