Portia de Rossi
The new Nip/Tuck star stole her Iggy Pop shirt from an ex-boyfriend — ''That should tell you how old it is,'' she cracks — and wore its threadbare carcass (shown here) ''until the end, about a year ago, when I decided it was just too ridiculous.'' But when it comes to favorite tees, letting go ain't easy: ''I actually bought another. And I'll probably wear holes in that one, too,'' she says.