By Christina Farr SAN FRANCISCO (Reuters) – Apple Inc has invited top fashion editors and bloggers in unprecedented numbers to its Tuesday launch gala, further evidence that the iPhone maker is preparing to take the wraps off a smartwatch. Apple is forging closer ties to the fashion world as it plots its foray into the fertile field of wearable technology, trying to win over a critical crowd that may prove crucial to the success of consumer gadgets worn around the body. Several fashion media editors told Reuters they received invitations for the first time to an annual September product-launch, which they took as confirmation of a wristwatch in the wings. This suggests Apple is serious about tapping into the fashion world, which often sits on the sidelines. Apple declined to comment.