Little Brother, at seven, is at that "in-between" stage where clothes labeled SMALL are too small, while clothes labeled MEDIUM are too big.
His closet and drawers are overloaded, because he's got some of each size going on in there as he makes the transition to a bigger size.
Over the summer, when I stocked up on school uniforms, I bought him a new sweater. Compared to his old SMALL one, the MEDIUM looked gigantic. But this morning he needed his sweater, and the sleeves on the SMALL didn't make it to his wrists anymore.
He struggled into his oversize MEDIUM sweater, with sleeves that pass his fingertips and a hem that hangs below his butt, and told me, "Mom, you should have got me a small and a half!"