Linda Ronstadt, "You're No Good"

I don't know much about Linda Ronstadt, but I know when a backup singer is better dressed than the main star of the show.  The lady in gold is clearly showboating, and the bongo player has a 'stache tighter than the gold lady's outfit.  Linda, meanwhile, looks like she's dressed for Double Coupon Day at Safeway.  Not that she's not hot--I'm just saying the lady in gold wins the gold medal on this one: