Corduroy by Don Freeman

From chapters.ca:
Corduroy has been on the department store shelf for a long time. Yet as soon as Lisa sees him, she knows that he''s the bear she''s always wanted. Her mother, though, thinks he's a little shopworn-he's even missing a button! Still, Corduroy knows that with a bit of work, he can tidy himself up and be just the bear for Lisa. And where better to start than with a quick search through the department store for a new button!