From the Japanese diary called the Pillow Book (Makura no Soshi) - Miyabi (pronunced: mee-ya-bee) things are those of courtly elegance. But in todays usage it just is used to describe the things in life that give lots of happiness and pleasure for being stylish and perfect. It means more than just pretty or nice, it implies that everything is "just so".
Is now known and Miyavi, since he left the VK /Jrock group, Due' le Quartz. He is known to be very egotistical and narcissistic, which is rumoured to be one of the reasons he left the band. For more info, go to Miyavi.