Our brilliant YA Ambassador Catriona Feeney, aka Little Book Owl, presents the definitive guide to All Day YA — breaking down who's on the program, what they'll be doing, and all the must-see events. Follow along with the YA community on Twitter and Instagram with #AllDayYA, #TeenCon and #LoveOzYA!

Don't miss the huge All Day YA line-up — check out just a few of the highlights below.