![Dr Susan Watson on Twitter: "@AnthonyHorowitz here's my son dressed as Alex Rider for #WorldBookDay (with his cat in the hat sister) https://t.co/GscV4drR6p" / Twitter Dr Susan Watson on Twitter: "@AnthonyHorowitz here's my son dressed as Alex Rider for #WorldBookDay (with his cat in the hat sister) https://t.co/GscV4drR6p" / Twitter](https://pbs.twimg.com/media/Cctg45LWoAEMS9F.jpg)
Dr Susan Watson on Twitter: "@AnthonyHorowitz here's my son dressed as Alex Rider for #WorldBookDay (with his cat in the hat sister) https://t.co/GscV4drR6p" / Twitter
![Rachel Dove 💓📖💋🤓🕊️ Twitterissä: "Hiccup the Viking (How To Train Your Dragon) and Alex Rider #worldbookday #worldbookday2017 https://t.co/WeEPVis1LC https://t.co/S48Rriexxd" / Twitter Rachel Dove 💓📖💋🤓🕊️ Twitterissä: "Hiccup the Viking (How To Train Your Dragon) and Alex Rider #worldbookday #worldbookday2017 https://t.co/WeEPVis1LC https://t.co/S48Rriexxd" / Twitter](https://pbs.twimg.com/media/DLrffx3WsAA5rdU.jpg)
Rachel Dove 💓📖💋🤓🕊️ Twitterissä: "Hiccup the Viking (How To Train Your Dragon) and Alex Rider #worldbookday #worldbookday2017 https://t.co/WeEPVis1LC https://t.co/S48Rriexxd" / Twitter
![Sophie Blacklaws on Twitter: "Alex Rider ready for World Book day -@AnthonyHorowitz https://t.co/df4001TPyX" / Twitter Sophie Blacklaws on Twitter: "Alex Rider ready for World Book day -@AnthonyHorowitz https://t.co/df4001TPyX" / Twitter](https://pbs.twimg.com/media/D1D_wkqW0AALLil.jpg:large)