This sweater is not my best friend...damn if I don't wish it were, though!

I've tossed aside the workings of a bulky cable sweater, which was pretty easy to knit up, but found itself abandoned to my dining table sans sleeves.It appears, despite following the directions properly, and adjusting for size and gauge, this sweater will be a wee too small for me...and anyone else I know that's not a baby. It came out so delicious looking, I am absolutely distraught that it appears just way too small for any normal person.It can't be buttoned.Maybe I can find a way to wear it over a cool t-shirt like this one that I'd never want to cover up anyways?Some thoughts, feedback, etc., would be lovely.I don't understand why I have such a block with sweaters. I am always way off on sizing; what gives? About the only successful sweaters I've done are little halfsies for dresses that can't really be categorized as sweaters, or of course, baby ones, that will fit at some point on the baby chain no matter.This makes me hate knitting sweaters. Someone take the hate away. You can find the pattern for this sweater, called The Best Friend Cardigan by Wenlan Chia for Twinkle's Big City Knits, over at ravelry or for free here.