Age 4-5!!!!

Got a few bargains from a sale online. Everything I have to say is lovely but I do have to question the sizing on this one item. Age 4-5!! Now I know that Erin at the age of nearly 4 is only in age 2-3 clothes but this (apart from the arms) fits me. But at £1.50 it really was a bargain and I'm sure when shes 15 she'll love it!!