On Cutiemarks And How They Can Be Used To Determine Age · 5:44pm Jul 4th, 2014
Yes, yes, long rambling title, not here for that though.
Let's assume Cutiemarks generally appear sometime around age eight to ten, though sometimes as late as fifteen. All the Mane Six got their Cutiemark at the same time, though not necessarily at the same age, let us also assume that they were ages nine (Twilight) to eleven (Rarity).