for the Allen & Co. Sun Valley Forum — aka "summer camp for billionaires." Attendees usually adhere to a simple dress code of T-shirts, vests, and athleisure for conference sessions in between ...

Here's a look at the best and worst outfits billionaires wore this year. Simple outfits worked for ... The strapless dress had a black bodice with a sweetheart neckline and a full skirt decorated ...