Mistaken for Me: A High-Flying Mix-Up and the Unlikely Grandparent Swap

Question: Write a story about a boy who is catching a plane to visit his grandparents. Due to how busy his parents are, he is travelling alone, but there is a lovely lady from the airline who is assigned to watch over him. After he boards and is shown his seat, a girl about the same age as him sits next to him. She is also travelling alone and the pair start talking. They both have the same eye colour, the same hair colour and even similar hair lengths. After take-off, the pair are getting a bit bored, when the girl asks if she can put some lip gloss onto the boy. He agrees, as he is also bored, so he soon has cherry flavour on his lips. The girl takes her necklace and puts it around his neck, then starts putting purple nail polish on him. When that his done, he admires his nails, then takes off his watch so that the girl can put it on. He suggests that they should go all the way and switch clothes, which the girl agrees to giggling. The pair head to the lavatory, which is large enough for the pair of them. They switch clothes giggling, and soon the girl is wearing his briefs, jeans, shirt, socks and shoes, and the boy is wearing her panties and training bra, her dress, tights and shoes. They head back to their seats, still giggling, and the girl wipes off her lip gloss and starts cleaning her nails off. The pair tells jokes and have fun for the rest of the flight, still wearing each other's clothes. After they land and get their bags, the airline staff help them into separate taxis. It's at this point that the boy realises that he is dressed as a girl and the airline staff are sending him to the girls grandparents, while she is heading to his own. He giggles like the girl he looks like and decides to just pretend to be their granddaughter, even if he has no idea how he will be able to get his own identity and clothes back.