This story originally posted on " Good Morning America." Disney is the parent company of ESPN and "Good Morning America." Serena Williams looks over at bite-sized Baked By Melissa cupcakes. "Are those cupcakes from Melissa? Nooo! Nooo!" she says of the purple-and-white treats, smiling with restraint. The tennis superstar, holder of a record 23 Grand Slam titles, refuses to deviate from her raw vegan diet, which she's known to adopt during tennis season. After her highly anticipated return to tennis last month at the French Open, following the birth of her daughter, Williams, 36, has her eyes set on Wimbledon, which kicks off July 2. The two-time defending champion couldn't defend her Wimbledon title last year because she was pregnant. Williams told  "Good Morning America" it's been "interesting" watching the world of tennis adjust for a new mother returning to the court. "Unfortunately, in the '90s they changed the rule whereas if you were injured...