HOW CAN I GET ON THE SHOW?

OK, I AM 57YEARS OLD,5FT.7STONE,SIZE 11/12YEAR IN TROUSERS/JEANS.I USED TO BY A SIZE 6 OR 8 AND THEY USED TO FIT ME,NOW I HAVE TO BUY CHILDRENS JEANS,WHAT OH WHAT TO DO GOK HELP ME PLEASE