There has also been a 33 per cent increase in Facebook fans.
Sales of branded Poppy Cat consumer products have increased 17 per cent.
Coolabi's hit pre-school brand was boosted following the successful launch of new toys and books at John Lewis' Oxford Street store.
Poppy Cat (pictured, left) and the voice of the character, Joanna Page (pictured, right), made an appearance at the store earlier this month.
Page met with journalists and took part in a photoshoot at the store. She introduced Poppy Cat in the book department, where reading sessions took place. There were also kids' colouring-in zones in the toy department.
Mummy bloggers also attended the event, which has seen the number of Poppy Cat Facebook fans rise 33 per cent and Twitter followers increase by 6.5 per cent. Positive Poppy Cat reviews appeared in over 40 parenting titles and websites following the event.
Natasha Dyson, Head of Licensing at Coolabi, said: "Poppy Cat and Joanna Page did a fantastic job in promoting the new toys and books. We are thrilled that sales of the products have increased and that the Poppy Cat fanbase has grown as grown as a result."
Christine Nicholls, from Poppy Cat’s master toy partner Golden Bear, added: "We are delighted with the response from the John Lewis event. The brand is new for us, and to get such a boost in sales so early on heralds great things for the collection going forward.
"The work put in by all parties to hold this event was fantastic and the outcome was well deserved; of course, having Joanna Page at the event really was the cherry on top."
Poppy Cat is based on the award-winning book series from Lara Jones that has sold more than 2.5 million copies to date.
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