Yay, references ! Old one were really old, and these ones are more precise, and even Patch have his reference sheet !
Age chart :
Sweety is a young adult (20?)
Seedy is a filly (like cmb)
Patch is an adult cat.
Height chart :
Sweety is an average pony, seedy is a bit more big than a usual foal and cat is as tall as his back is Sweety knee height. (Taller than Opal)
Oh, and check the blog, there is a new background ! ^^