Aaah, pop culture: a T-shirt worn by FZ which he had obtained prior to a 1980 gig in Glasgow becomes “new must-have after American Idol appearance”:
[...] the Radio Clyde T-shirt has become the must-have item for Hollywood’s A-list. Trendsetters are rushing to buy the “261 top” – with the latest star to wear it being American Idol judge Randy Jackson.
Richard Muir, marketing manager for Radio Clyde:
Clyde was playing Zappa music while some radio stations didn’t. He was proud to wear the shirt because he felt the station was supporting him.
The item in question can be found here, in case you were wondering.