I'd say: Give them a new home where they'll be appreciated now rather than wait and maybe have to ditch them because they're aged beyond use in some years. Getting into 'thin' clothing is a happiness-inducing enough event in its own that it doesn't need to be all that fancy. (Which reminds me: I had this really wonderful outfit I bought in London once which I kept lugging around in determined hope of dieting into it again, even turning down a thin friend who offered me good money for it. And then it met with a little accident, so now I've neither outfit nor money. Ce la vie! I've become somewhat better at getting rid of surplus clothing after that :)