The perfect bedtime book to calm your own sleepy unicorn, even on their birthday!

Full of balloons, presents and birthday fun (and a sprightly unicorn and her friends), little readers will love this calming tale before bed.

It's Twinkle the unicorn's birthday and she's having a sleepover party! There are party games, presents, cake, balloons and even fireworks!

But as Twinkle's dad counts down to bedtime, there's still a lot going on . . . will Twinkle and her friends go to sleep in time?