The Fashion Info

It seems like many celebrities these days are becoming fashion designers or having their own clothing line. Do you think that getting a degree would be useless to them (since they’re already famous) or do you think it would further their fashion career even more?
So do you guys think getting a degree would be useless for them (because they don’t need it) or would it further their sales of fashion and accessories?
The Olsen twins and Kimora Lee Simmons are the only ones I can think of that are successful fashion designers without a degree.