A super cute Kirby :) This design started off life as my 2019 MerMay drawing challenge sketch for day 17.
Where to buy online
TeePublic (US and UK)
RedBubble (US)
Threadless (US)
NeatoShop (US)
PopupTee (US)
You can find the design on t-shirts in most stores, but also on other products depending on the store (e.g. hoodies, mugs, stickers, notebooks, phone cases, greeting cards, cushions, socks etc).